The 1956 ACT Micro Crew Midweight Cushion socks are durable socks for hiking/trekking. Using Darn Tough Vermont's unique knitting technology, the Merino wool's dense and resilient loop construction provides high cushioning to absorb impact. The upper ankle features a stay-put fit for a proper fit. With elastic arch support, these socks are comfortable and durable for long hours and long-term hikes, and are Darn Tough. Suitable for various activities. [Materials] 67% Merino Wool, 37% Nylon, 3% Lycra Spandex [Size] L (27.0-29.0cm) [Cushion] Midweight Cushion [Applicable Categories] Hiking, Trekking