Think it’s stupid to invest in a high quality sock when it’s guaranteed to get wet and muddy? Think again. Almost equally as important as your shoe, you want a sock that’ll keep your toes warm and support your arches, otherwise, forget running in comfort. The Darn Tough Micro Crew Mesh Ultra-Light 1700 run/bike sock is a blend of Merino wool (for warmth) and nylon and spandex (for a foot-hugging fit). Our favorite feature: seamless knitting around your toes eliminates hot spots and blisters. Imagine getting a whopping red hot spot halfway through because your socks couldn’t handle the abuse. Not good.