The 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.

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 comfort and sweat-wicking. Natural antimicrobial properties, inhibiting growth of odour-causing bacteria.