Wigwam Weather Warrior Sock Review

“They’re ideal for all shoulder-season conditions, from rainy and 20°F to sunny and 65°F,” says one tester. This calf-high sock blends wool (17 percent) with Outlast acrylic, which regulates temperature by changing states: The fibers’ polyester sheath stays intact, but the acrylic inside liquefies as it absorbs heat from skin (the process creates a warming effect). $17; 3 oz.; shop.wigwam.com