Sealskinz Bircham Waterproof All Weather Ankle Length Sock

The Sealskinz Bircham Waterproof All Weather Ankle Length Sock is the original, military-endorsed waterproof sock designed to keep your feet dry, comfortable, and protected in all conditions. With its ankle-length profile, it’s ideal for high‑intensity activities as well as everyday outdoor use.

Built with a three-layer bonded construction, the Bircham combines a durable Polycolon® and nylon outer layer, a hydrophilic Aquasealz™ waterproof membrane, and a premium Merino wool interior. This advanced design ensures 100% waterproof protection while remaining windproof, breathable, and thermoregulating.

Whether you're hiking, cycling, commuting, fishing, hunting, or working outdoors, the Bircham sock delivers reliable all-weather performance — from rain and snow to mud and stream crossings.

Features

• 100% waterproof, windproof and breathable
• Ankle-length design for versatile wear
• Aquasealz™ hydrophilic waterproof membrane
• Premium Merino wool lining for warmth and moisture control
• Thermoregulating and naturally antimicrobial
• Durable Polycolon® outer with 4-way stretch
• Seamless construction with hand-linked flat toe seams
• Elastic support at ankle, heel and instep for comfort and blister prevention

Materials

• Outer Layer: 62% Polycolon, 29% Nylon, 9% Elastane
• Middle Layer: Aquasealz™ Waterproof Membrane
• Inner Layer: 36% Merino Wool, 36% Acrylic, 18% Polyester, 5% Nylon, 5% Elastane

Care Instructions

• Wash at 40ºC/105ºF
• Low tumble dry or drip dry
• Do not dry-clean, iron, or bleach

Size Guide