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.

Features

• Each stratum of the Three-Layer Aquasealz Composition assists in the release of internally generated moisture, aiding thermoregulation
• The Aquasealz hydrophilic membrane is completely waterproof, keeping feet dry in the wettest of conditions
• Ankle length complements the overall breathability of the garment
• Mountain biking, trekking, trail running, and hiking are all in the scope of the Bircham