Smartwool Classic Thermal Merino Base Layer Crew – Men's socks-accessories Relaxed fit allows full range

Relaxed fit allows full range of motion without excess material getting in the way

Lightweight construction doesn't trap heat — a real advantage when you're training through Southern summers

Drop-in pockets and a secure high-rise waistband round out a legging that earns daily use

Made in the USA with a seamless toe for blister-free comfort on long miles

and Coyote — fits over most mid and high trail and hiking boots

Smartwool Classic Thermal Merino Base Layer Crew – Men's socks-accessories Relaxed fit allows full rangeWhen the temperature drops and the miles get serious, this midweight merino crew is our first recommendation for cold weather trail runners and backcountry athletes. 100% merino wool in an interlock knit naturally regulates temperature, wicks sweat, and kills odor without chemical treatments. Offset flatlock seams and a seam free shoulder panel make it comfortable under a pack all day. 100% responsibly sourced merino wool regulates body temperature