10 Cold-Weather Running Must Haves — According to Experts

Sweetfeet Black Performance Compression Mid Crew Sock (3 Pairs) ($32)

McCarthy calls these socks the best in the business, and they come in a convenient three-pack bundle in three different shades (also including white and neon yellow). They're made of a nylon sweat-proof, wicking material and have a unisex sizing — you can choose between small/medium and large — for a simplified compression fit.