What Our Gearhead® Experts Are Saying:"I have been wearing the Echo OTC Sock on full resort days and it consistently keeps my feet warm and dry without any of the bulk that heavier ski socks tend to have. The over-the-calf height stays put inside the boot all day, and the terry cushioning underfoot makes a real difference on long runs."A good day on the mountain starts before the first chair spins. It starts with the right layers, the right boots, and the right sock underneath it all. The Darn Tough Echo OTC Midweight Cushion Sock gives you that foundation, delivering the kind of warmth, fit, and all-day comfort that keeps you focused on the snow instead of what's happening inside your boot. Knit from a merino wool blend at Darn Tough's Vermont mills, the Echo naturally regulates temperature and manages moisture through long days of hard skiing and mellow cruising alike. Terry loop cushioning underfoot adds comfort where the boot puts the most pressure, the over-the-calf height seals out cold air and stays put without slipping, and the True Seamless™ toe closure removes any friction that could become a distraction mid-run. Backed by an unconditional lifetime guarantee, the Echo OTC is the last ski sock you will ever need to buy.