Merino wool is soft next to skin, keeps you cool when it鈥檚 hot and warm when it鈥檚 cold, and moves moisture away from your body. But听it often wears out quickly, which is a problem because merino apparel is expensive. Luckily, there are听a bunch of听staples available through Amazon鈥檚 Prime Day mega-sale. Here are some of the best.听

Icebreaker Spector T-Shirt (Men鈥檚): $45
Lightweight merino wool T-shirts are the ultimate all-around听base layers.听In warm weather, wear them on their own. In cooler temperatures, layer them under a shirt or sweater. For high-exertion听cold weather activities, nothing else will keep you as dry under a lightweight soft shell jacket.
Made from a 90 percent merino, ten percent nylon blend, the featherweight听Spector will hold its shape through wear and washes, and keep you cool in even the hottest conditions or through the heaviest activity. For today and tomorrow, it鈥檚 discounted from $60 to $45 in select sizes in colors.听

Icebreaker Hike+ Light Sock (Men鈥檚 and Women鈥檚): $16.50
Years ago, I threw out all of my cotton socks and replaced them with three pairs of these lightweight merino items. Aside from skiing (when I wear something taller), and very cold weather activities (where more insulation is needed), that remains my setup today. These things听will keep your feet dry and comfortable in anything from snowy hikes in the mid-teens听to summer backpacking trips. I wear out those three pairs about once a year, and re-stocking them today听is going to be cheaper than usual听because they鈥檙e discounted from $22 to $16.50 a pair.

Icebreaker Multisport Mini Sock (Men鈥檚 and Women鈥檚): $13.50
The only other time you won鈥檛 find me in the Hike+ Lights is when I鈥檓 working out. These low-cut socks are made from an even lighter, more ventilated merino-nylon blend that helps听keep your feet dry while training.听Ankle-height, they look good with a pair of athletic shoes. Today, they鈥檙e discounted from $18 to $13.50.听

Icebreaker Oasis Base Layers (Women鈥檚): $135
For everyday winter wear, 200-weight merino base layers are听perfect. They听won鈥檛 be too warm during exertion, dry听quickly, and are听thin enough to layer under normal athletic clothes. And you won鈥檛 find a better all-round set than Icebreaker鈥檚 Oasis range, which are made from 100 percent merino wool. Today you can save $45 if you听buy both.听