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. The Bircham combines premium merino wool with performance-driven, engineered fibres. The outcome: a highly functional sock with a natural feel. 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.

Technical features

Features

• Ideal for a wide range of activities: Waterproof socks are ideal choice when there’s a risk of getting your feet wet while hiking, cycling, commuting, hunting, fishing, or working outside.
• Innovative Materials and Construction: Featuring a three-layer bonded construction that combines a 100% waterproof hydrophilic membrane between a premium Merino wool interior for warmth and sweat-wicking, and a durable nylon blend exterior with 4-way stretch for great fit and wearability.
• Extremely Breathable: Particularly noteworthy is the unmatched breathability of the hydrophilic waterproof membrane to release perspiration steam and warm air from inside the sock. This creates a high level of comfort for the wearer, even while performing strenuous and aerobic activities, while also preventing rain, mud, and sand from getting inside the sock.
• Built for comfort and blister prevention: Designed with a seamless construction including hand-linked flat toe seams and the addition of elastic support on the ankle, heel and instep, you won’t notice the seams but will definitely notice the extra comfort and fit.
• Handmade & Hand Tested: Exclusively handmade in the UK to our unrelenting standards and attention to detail, every single sock is hand-tested for waterproofness.