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Sealskinz Bircham Waterproof All Weather Ankle Length Socks
Description
Sealskinz Bircham Waterproof All Weather Ankle Length Socks
The Sealskinz Bircham Waterproof All Weather Ankle Length Socks are designed to keep feet dry, warm and comfortable in demanding outdoor environments. Built with a three-layer Aquasealz™ waterproof construction, these socks provide complete protection from water while remaining breathable during high-intensity activity.
The interior combines premium merino wool with engineered performance fibres, offering natural comfort, moisture control and odour resistance. With their ankle-length design and flexible construction, Bircham socks are suitable for activities such as trekking, trail running, mountain biking and hiking.
Key Features
- 100% waterproof Aquasealz™ membrane protecting feet from rain and wet terrain
- Merino wool interior for warmth, comfort and natural moisture management
- Durable polycolon and nylon outer layer providing flexibility and long-lasting wear
- Four-way stretch construction ensuring a secure and comfortable fit
- Thermoregulating performance helping maintain comfort during activity
- Ankle-length design offering breathability and freedom of movement
Three-Layer Construction
- Outer Layer: Durable polycolon and nylon blend with four-way stretch for optimal fit and durability.
- Middle Layer: Aquasealz™ waterproof membrane that prevents water penetration while allowing moisture vapour to escape.
- Inner Layer: Merino wool blend lining providing warmth, comfort and natural antimicrobial properties.
Design and Performance
The Bircham sock combines natural fibres with high-performance technical materials. The merino wool lining provides softness and helps regulate temperature, while synthetic fibres enhance durability and moisture management.
The Aquasealz™ membrane forms a fully waterproof barrier, preventing external moisture from entering the sock. At the same time, internally generated moisture is released, helping maintain dry and comfortable feet during active use.
This combination makes the Bircham ideal for hiking, trail running, mountain biking and other outdoor activities where waterproof protection and breathability are essential.
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 |
Sock Size Guide
| Size | UK | EU | US (Men) | US (Women) | Foot Length |
| S | 3 – 5 | 36 – 38 | 3.5 – 6 | 5 – 7 | 22 – 23.7 cm |
| M | 6 – 8 | 39 – 42 | 7 – 9 | 8 – 10 | 24.6 – 26.2 cm |
| L | 9 – 11 | 43 – 46 | 10 – 12 | 11 – 12 | 27.1 – 28.8 cm |
| XL | 12 – 14 | 47 – 49 | 13 – 15 | 29.6 – 31.3 cm |
Please note: The measurements correspond to your normal shoe size. If you are at the top of a size range, it is recommended to choose the larger size, as waterproof socks are generally thicker than standard socks.
Care Instructions
- Machine wash at 40°C
- Low tumble dry or drip dry
- Do not dry clean
- Do not iron
- Do not bleach
FAQ
Are Sealskinz Bircham socks fully waterproof?
Yes. The Aquasealz™ membrane forms a waterproof barrier that prevents external moisture from entering the sock.
Are these socks suitable for hiking?
Yes. The Bircham socks are designed for hiking, trekking, cycling and other outdoor activities where waterproof protection and breathability are important.
Do waterproof socks still breathe?
Yes. The Aquasealz™ membrane allows moisture vapour generated inside the sock to escape while blocking external water.
Do the socks require special waterproofing treatment?
No. The waterproof membrane is a permanent barrier and does not require reproofing.
Glossary
- Aquasealz™: Waterproof membrane technology that blocks water while allowing moisture vapour to escape.
- Merino wool: A natural fibre known for warmth, breathability and odour resistance.
- Polycolon: A synthetic fibre that helps wick moisture away from the skin.
GPSR Safety Information
Use the product only for its intended purpose as clothing for outdoor activities. Keep away from open flames and strong heat sources.
Manufacturer
Sealskinz
36 Oldmedow Road
Hardwick Industrial Estate
Kings Lynn, PE30 4JJ
United Kingdom
https://www.sealskinz.com/pages/contact-us