Heat on the trail comes in many forms. From hot and humid to dry and searing to just plain old mean and nasty. This Men's Hiker Coolmax Micro Crew Midweight Socks act an air conditioner of a sock offers cooling comfort on even the balmiest of days.FeaturesA performance fit means no slipping, no bunching, no blisters for peak hiking comfort.True Seamless Toe technology for an ultra smooth, undetectable feel.Reinforced footbed and Achilles cushion improves the comfort of Darn Tough socks and helps them last longer.Synthetic Coolmax yarns are vegan and help feet beat the heat and stay dry while hiking.Midweight Coolmax socks actively move moisture to keep feet in their comfort zone on the trail. Vegan friendly.The "still" in Still Made in Vermont, USA is personal.Unconditionally Guaranteed for Life - if these aren't the longest lasting socks you've ever owned, return them for another pair.