the waterproof Gore-Tex lining provides optimal comfort in a variety of conditions

Drop tail hem for added coverage

The cool grey tone mirrors the mountains—resilient

and fast for those next-level efforts

Sealskinz - Bircham Waterproof All Weather Ankle Length Sock Size:L the waterproof Gore-Tex lining providesThe original, military endorsed Bircham Sock. Ankle length. 100% waterproof and thermoregulating, the Bircham excels in high intensity sports, as well as more relaxed outdoor pursuits. Handcrafted in the Sealskinz factory in Norfolk. Technology: Outer Extra durable polycolon and nylon blend, with 4 way stretch for an optimal fit. Mid Section Aquasealz waterproof membrane releases moisture vapour from inside the sock. Interior Premium merino wool for