The Darn Tough Vermont Women's Sierra Stripe Micro Crew Light Cushion Sock is perfect for hikers looking for a little less cushioning. True Seamless construction provides a smooth, performance fit to assure theres no slipping, no bunching, and no blisters. With half the wool yarn weight of the cushion socks, the lightweight cushion socks deliver lightweight performance with the perfect amount of cushioning along the base of your foot, while 17.2 Micron Merino Wool delivers supreme comfort. Breathable and fast drying. This all-weather sock stays cool in the summer and warm in the winter, plus its naturally antimicrobial so it repels bacteria and odora great feature when you need to get an extra day (or two) out of your socks.