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Surefire, known for making indestructible, blind-your-buddy flashlights, is launching a new line for your noggin. Its first-ever headlamp, the Saint, cranks out 100 lumens (twice that of average headlamps), and its aluminum housing is both water- and smashproof ($150; surefire.com). Not to be outshone, Petzl created the…

I'm looking for a woman's overnight/weekend backpack for a friend. I’ll likely carry most of the gear, so I’m not sure of the optimal pack size. An Osprey Aura 50 was recommended, but it seems slightly small. What do you think? Andrew Seattle, Washington

I'll soon be living in my tent for six weeks in Tanzania, and I’m looking for a lightweight, compressible, and not-too-pricey sleeping bag that will do well over that stretch of time. I like the idea of a down bag, but I'm worried that moisture from me or humidity could accumulate over a long stretch of time. Thoughts? Sara Stony Brook, New York

I've been a backpacker for 30-plus years, and recently I've noticed my knees complaining after steep downhill stretches. I'm considering making a shift to ultralight gear, and I think a lightweight trail-running shoe is a good start. Can you offer some suggestions for someone making this switch? Kurtis Seattle, Washington

Do you have any recommendations for a good weather-tight, car-camping, summertime, family tent (for six people)? Charles Fort Smith, Arkansas

I snow cp, warm-weather cp, and do moderate mountaineering, so I need a good all-around sleeping bag. Is the Mountain Hardwear Lyell (rated to -15 degrees) suitable? Chris Seattle, Washington

I’m going backpacking in South Dakota’s Badlands, and everything I read says that you have to bring in your own water. For a four day trip, that could mean as much as five gallons. What type of water containers should I use to most effectively carry this much water? Junior Minneapolis, Minnesota

I have just acquired a Quest Starlight tent that’s in pretty good shape. But, the older fellow who sold it to me said that it likely wouldn't hold up to several days of rain. Can I make the fly waterproof enough so it won't wet-out if rained on for a long time? What about the floor? Ken Calgary, Alberta

I would rank my outdoorsyness at a seven. I love backpacking, but I don’t get out as often as I would like. I did, however, recently backpack South erica and survived winter in southern Argentina with a cheap-o tent. Now I want to invest in a good two-person tent. What do you suggest? Alex San Francisco, California

My husband and I are looking for relatively lightweight, zero-degree sleeping bags that can be zipped together and are suitable for backpacking. Any advice? Kathy Kremmling, Colorado

I’m looking for a new cp stove for climbing at high altitude (10,000+ feet). What’s the best stove for the harsher conditions at higher altitudes? Matt Vancouver, British Columbia

I find mummy bags to be really confining. I understand the point, of course, but I'm a side sleeper, and I like to lay "can-opener-style." (You know, with one leg pulled up and the other straight.) Can this question get any more awkward? Anyway, do you have any suggestions for sleeping bags that are a little less crped but would still keep me warm from April to mid-October in the Colorado Rockies? Sarah Boulder, Colorado

My buddy and I are planning a mega-hike down one of Colorado’s mid-length trails during summer 2009. What type of preparation and equipment will we need for a 250-mile hike? What about an overnighter that I'll be doing later this summer? Jason Pace, Florida

Have you tried the Aquira Frontier water filter yet? Also, what's the best way, that isn't too expensive or heavy, to treat water while backpacking? Claudia Asheville, North Carolina

What’s the best three-season, ultra-light tent for Rocky Mountain backpacking? I've looked at the The North Face Vario 23, MSR Hubba Hubba, and Marmot Aura 2P. Gabe Montana

I walking the Cino in Northern Spain at the beginning of April and will be staying in hostels. Can you please to recommend the lightest sleeping bag that is sufficiently warm for this time of year? Kate Faversh, Kent

I'm going on a trek through the Indian Himalayas near Darjeeling in early March, and don't know what, or how much, to bring. We’ll spend several days hiking between villages in moderately cool weather. What should I bring, and are iodine tablets sufficient to make the water safe? Chris Cincinnati, Ohio

I looking for a real backpack, with a useful hip belt, that will also fit the dimensions for airline carry-on. Since European commuters are somewhat more restrictive about that, I would prefer something in the 21"x14"x7" neighborhood. Can you make a suggestion? Don Denver, Colorado

My son and I winter cp, and we want to buy a new tent that will last many years and survive his solo trip to Alaska. Would you recommend the Hilleberg brand? Van Sioux Falls, South Dakota

My son is headed to New Zealand for the spring semester. Things sure have changed since I went to college! He will have some time to backpack, and he’s not sure if a canister or white-gas stove will be easier to travel with and refuel. We have been eying the Vargo Jet-ti. What do you think? Mike Front Royal, Virginia

I noticed that Sierra Designs rates its tent-floor waterproofing at 165 psi, while Mountain Hardwear rates its tents at 5,000 mm. Which of these two fabrics is the most waterproof? And why the different rating method? Grant Birmingh, Alabama

I'm a student on a budget. Every weekend I go snowboarding and figure I may as well sleep outside to save money, plus I like the outdoors. The Outdoor Research Aurora Bivy combined with a Coleman Tasman XO Hybrid seems like it would work. Would this be suitable for sleeping outdoors around Whistler B.C. and similar locations? Chris Vancouver, British Columbia

I'm looking for a tent that can do it all. I’ll be in New Zealand in July (their winter) biking around the North Island. I also really like to backpack here in Oregon. Which tent will work for both pursuits? Zach La Grande, Oregon

I just read that Vancouver-based Mountain Equipment Co-Op (MEC) has pulled all polycarbonate water bottles from its shelves due to safety concerns of the chemical bisphenol A (BPA). Should I be worried? With a retailer of that magnitude deciding to no longer sell polycarbonate bottles, it makes quite a statement. Brian Columbus, Ohio

I understand the MSR Reactor stove has an internal pressure regulator, but do you think this stove will perform in very cold temperatures (-10F and colder) or at high altitude (above 10,000 feet)? Justin Tacoma, Washington

I’m curious if layering sleeping bags is an effective way to turn a three-season bag into a four-season bag. I currently own a Marmot Arroyo, and I wonder if tucking a Feathered Friends Hummingbird or Lark inside of it would do the trick for snow camping, paired with a four-season tent. I know you have both the Marmot Arroyo and a FF Swallow…care to head out into the Cascades and let me know? Nicholas Seattle, Washington

I’m looking for a weekend bag that will hold a two-person tent, sleeping bag, and a little food and clothes. I have a Mmut Direct 28 daypack and love the airflow on my back. Is there a weekend backpack with a similar design and comfort level? You're the best. Thanks. Jason Chattanooga, Tennessee

I have a Marmot EOS 1 tent that I love for three-season camping in Colorado. I would like to use the EOS occasionally for winter camping, but I wonder how well the EOS would protect me from blowing snow. Would it be a wise investment for me to purchase a bivy to use inside my EOS for those few times I may camp in the winter? Sherry Parker, Colorado

I went camping in the Adirondacks recently, and my sleeping bag—which once seemed comfortably roomy—had mysteriously become pretty tight. It must have shrunk in storage; weird, huh? In any case, who makes a good synthetic, roomy bag for middle-aged people in the 15 to 20 degree range? John New York, New York

I’m looking for a relatively inexpensive tent for winter camping. I’ve seen some tents advertised for three-and-a-half-season use, but I'm not exactly sure what this means. What is the difference between a three-and-a-half-season tent and a four-season tent? Michael Poynette, Wisconsin

I try to keep my backpack light, so for water purification (in Washington’s Cascade Mountains), I carry just a vial of household bleach and use two drops per quart of drinking water. I have never had any problems, but I have a cast iron stomach anyway. What do you think? Doug Tacoma, Washington

I’m curious about the ARB Simpson II Rooftop Touring Tent, which attaches to a vehicle's roof rack. It makes sense in a place like Australia, where sleeping on the ground could be riskier. But for the North American camper, is this a revolution in car camping or just a waste of money? Jay Dana Point, California

What do you recommend I get my son for winter camping in New England? He is five feet tall and weighs about 100 pounds. I want to keep him warm and dry—and keep the bag for several years. I'd like to spend under $150, if possible. I was also told 0 degree is best and down is not good if it gets wet (and it probably will get wet). Cindy Hartford, Connecticut

We plan to visit friends for a day or two at a time and would like to get sleeping bag liners to use instead of sheets. We also want something to use as a light sleeping bag when our 15 degree bags are too much. Can you compare the silk, cotton, fleece, and synthetic liners on the market? Diane Portland, Oregon

I need a light tent that comfortably fits two people but can fit three in a pinch. I leery of single-walled tents because of numerous reviewers citing condensation problems. What is your recommendation? Mike Midland, Texas

I was told to avoid plastic water bottles containing Bisphenol-A (e.g., Nalgene bottles) because of the health risk they are thought to pose. So, I recently acquired a Laken aluminum bottle. Is this really an improvement, health-wise? Ron Orleans, Ontario

I rolled out my tent fly after not using it for a while and it was all stuck together. With difficulty I was able to unstick it for use. But if I roll it up again, I’m sure it will get stuck and perhaps rip when I try to use it again. I've aired and sunned it out on the line for many days. No change. Help! Charles Fairfax, California

I am the project officer in charge of the design, development, and procurement of all Individual Load Bearing Equipment for the United States Marine Corps. We’re currently performing market research on backpacks with approximately 2,500 cubic inches of capacity. Durability and comfort is top priority. I would like to purchase several different styles of backpacks to study the best ideas out there. Which manufacturers and packs should I consider? John Quantico, Virginia

I'm going camping in the Caribbean where it’s relatively dry and night temperatures are usually 75F. What sleep system would you recommend? Abel New York, New York

I'll soon be traveling around Ethiopia for three weeks, and I need a new pack for this trip and beyond. I travel mainly to third-world places on the semi-cheap. I need a pack that’s light, can take a beating, and doesn't take up much room. And I don't want an attachable day pack on it. Any suggestions? Herb Danbury, Connecticut

I planning to trek through Nepal and India and wondering what is the best purification and/or filter system to use. I have heard a lot about the SteriPEN. How does it compare to the rest? Miri Halifax, Canada

I’m getting more involved in backpacking and trying to find the right camp stove and cookware to use. For now, my trips will be no more than four days. I just need a good beginner stove, preferably one that has a simmer option, and cookware that will last. Any ideas? Bill Everett, Washington

I have a single wall Garuda tent, and I recently noticed that the fabric had separated into two pieces of fabric with water pooling between it. I planning on sealing it with techtron. Will this also help the fabric to rebind into one piece? John San Luis Obispo, California

I bought a batch of white gas about three years ago. Will using this dage my stove? Also, given how flmable the fuel is, is there a safe and recommended method of disposal other than burning it in a stove? Skot Vancouver, British Columbia

I'm hiking the Teton Crest Trail soon and want to try out a solo tent in an effort to lighten my pack weight. Could you give me your opinion on a few ultra-light solo tents? Doug Saint Louis, Missouri

I live above the Arctic Circle, and a friend wants to come up this winter to help out with the dogs. He wants to stay in a tent on our property. I'm leaning toward a Cabela’s Outfitter canvas wall tent or ISQ tent with two pods. What’s your opinion of these tents? Jeff bler, Alaska

I do a lot of camping on float trips, and the river canyons can be awfully hot. I’m looking for a tent that provides maximum ventilation even with a rain fly on. The Quest tent I use has good air flow, but it doesn't hold up to high winds. Is there any hope? Sue Great Falls, Montana

Once again I find myself kneeling at the altar of the Gear Guy, seeking truth, wisdom, and equipment bliss. After having lugged my Gregory Whitney to Rainier’s Camp Muir on two occasions, I looking to shave more weight. Do the load-carrying suspension systems in lighter packs measure up to what I getting with my Gregory pack? Please, enlighten me. Stan El Dorado Hills, California

I’m a wildland firefighter, and I need a very lightweight, compact sleeping bag while on the job. Also, I will be going to Alaska or the Tetons to be a dog-sled tour guide and to do some snowshoeing, so I need a nice bag in the cold. Given that my price range is under $200, what are your suggestions? Straton Logan, Utah

I’ve always packed clothes in zip-lock-type bags, but I’m sick of my clothes ending up in different places in the pack. I’d like to switch to one dry compression sack. Any recommendations? Also, is there anything lighter than the Ursack that you would recommend for food storage? Dan Vail, Colorado

I’m going on a cold-weather camping trip, but my sleeping bag is not very warm. I don’t want to buy a new bag. What can I do to make it warmer? Dalva Palo Alto, California

How can I prevent my tent from warping in all the worst places, shrinking at some points and stretching elsewhere? This leads to sagging in the rain. I never pack them wet and never let them dry in the sun. And thanks for all the advice; I have been a reader for the past ten years.

We purchased a Sierra Designs Bedouin 6 tent thinking it would be the perfect size for our family of four. But it’s just a little too small. We need something that’s just a foot or two wider and longer. Any suggestions? Dawn Minneapolis, Minnesota

I’m looking for a 30-degree sleeping bag that works well for both backpacking and a six- to 12-month world trip. It should weigh less than three pounds and compress to the smallest size possible when packed. Also, down or synthetic? Nick Redondo Beach, California

I have bad knees from running and think that poles might help with my hiking. I doing the Grand Canyon rim-to-rim this fall and want your opinion on a good mid-range trekking pole. What do you recommend? Heidi Chicago, Illinois

My husband and I are boaters, and we’re looking for sleeping bags that are super-light and cool for warm weather. Is there such a thing? Claudia Wainer, California

I’m interested in your opinion of the single-walled Mountain Hardwear EV3 expedition tent. I haven’t seen a valid review anywhere, but I have heard that there are some concerns with ventilation. The tent is obviously bomber, but what else can you tell me? Joe Los Angeles, California

My sister is joining the Peace Corps and will likely be stationed in Central or South erica. I want to get her a water filter/purifier. What do you recommend? Julie California

I'm planning a hike of the Colorado Trail starting in July. What's the best temperature sleeping bag to buy, and what bag do you recommend? Robin Dillon, Colorado

I've done my research and will start to bag Colorado’s 14ers this summer. With all the choices out there, what pack should I bring? Tony Euless, Texas

I've always carried white-gas stoves, but a friend of mine says that a compressed-gas stove is the way to go. He says it's lighter, more reliable, and burns hotter even at altitude. Is this true? Gary Salt Lake City, Utah

I’m an avid hiker, and now I’m expanding my horizons to the water via a kayak. I’m thinking about getting a new tent for these trips. Which tent works well on the beach? Andy Baltimore, Maryland

I’m looking for a new sleeping bag to fit my large fre (6’6”) and small budget. I’d like a 20- to 30-degree bag, preferably down. What do you suggest? Kenny Cedarville, Ohio

I plan to travel for four months in eastern and southern Africa, and I intend to use 50 percent DEET (spray or lotion) and permethrin-treated clothes and nets. But I have no idea how much of either of these items I will need for this length of time. Can you provide any enlightenment? Daniel Dublin, Ireland

I need a new water filter for summer trips into the Ouachita Mountains, and I'm torn between the MSR MiniWorks EX and the Katadyn Guide Pro. I know you're a fan of the MiniWorks, but I can't screw it onto my existing stock of Platypus water bottles. Is the MiniWorks superior to the Guide Pro? Greg Dallas, Texas

I 15 years old and do a lot of backpacking for my age. I’m using my dad’s old stove that is older than me. It works fine, but they no longer make the fuel canisters to fit it. What’s a good lightweight stove that’s not too expensive? Collin Suwanee, Georgia

I'm going on an extended solo backpacking trip through the desert of Mexico, possibly into Central America, and ending in Cuba or Jamaica. So I need lightweight everything. I’m trying to decide between the MSR XGK EX and the Jetboil stoves. Will I be able to find canisters and other replacement parts in Central America? Kory Phoenix, Arizona

I've introduced my three teenage boys to backpacking over the last few years and managed to get my backpack from 40-plus pounds to about 20 for four- to five-day summer ventures. What's a good lightweight backpack to haul 20 to 30 pounds? Steve Fishers, Indiana

I love to go on light hikes (carrying only a hydration bladder) with my dog. But being a java junkie, I would like to know the best way to have hot coffee at my destination without adding too much weight. I have thought of using a dog pack, but my super-active pointer just won’t have it. Christopher Brooklyn, New York

I looking for a lightweight tent for summer camping and have considered the Sierra Designs Clip Flashlight. But it seems like I can get a larger tent without sacrificing weight. Any suggestions? Chris Helena, Montana

Planning to book that trip to Laos’s Houaphan province you saw in our Best Trips of 2007 feature? Don’t let a swig of tainted water ruin the journey. Steripen, which pioneered the use of ultraviolet light in portable water purifiers, has created the ultimate drinking companion for travelers. The…

I’ve had a Therm-a-Rest sleeping pad for a few years now, and I believe it has lost its cushioning. I stored it rolled up in its carry bag. Was that bad? Any recommendations on a new one? Rafael Laredo, Texas

I'm in the market for a tent and down to the Black Diond Mesa and the Marmot Swallow. I like the four-season convertibility of the Swallow, and the Mesa looks sublime. I trust BDs products, but I'm concerned about how warm the Mesa will be. My other concern is condensation. What’s your advice? Beth Stone Ridge, NY

I need a sleeping bag that will perform in the winter and early spring for ski touring/snow camping. I trying to decide between Feathered Friends with EPIC or Western Mountaineering with MicroLite XP. Also, I don't want to sleep in layers, so I’ll likely get a zero-degree bag (especially since there doesn’t seem to be much of a weight difference between it and a 15-degree bag). What are your thoughts? Lindsay California

Are there any reliable and easy-to-use wood-burning stoves on the market? Most of them on the Internet look like Do-It-Yourself types. And how well do these things work compared to liquid-fuel stoves? Jeremy Moscow, Idaho

How long should a quality down sleeping bag last? I have a Feathered Friends Swallow that’s about 15 years old. I've treated it well and kept it clean, but it seems to be losing loft. I due for a new bag? Bob San Francisco, California

Can you recommend a durable tent with room for me to stand up inside (I’m five feet, six inches tall)? I work at Renaissance Festivals around the country and live in a tent ten months out of the year. I have a car, so weight is not an issue. Craig Edinburg, Virginia

I’m in the market for a new two-person four-season tent that will keep me dry in snowy conditions but won’t weight me down too much while snowshoeing. Any recommendations? Missy Portland, Maine

I need a new two-person tent (for my tall self and my gear). I spend a lot of time backpacking in wet, windy, and cold weather, so I don't mind spending $300+ if the tent is worth it. I had a Sierra Designs Half Moon Tent, but all my gear was destroyed in a house fire. Any ideas? Kerry Hannibal, New York

I'm looking for a good four-season tent to take on England’s Pennine Way in March. I’ve looked at the Eureka! Alpenlite 2XT, thinking that a tent from a few seasons ago might be cheaper. Do you have other suggestions for $300 or less and around 7.5 pounds or less? Dave Asheville, North Carolina