SealSkinz Bircham Waterproof All Weather Ankle Length Sock
- Lifetime Waterproof Guarantee from Sealskinz
- The original midweight waterproof sock
- Thermoregulating merino wool inner, naturally odour-resistant
- 4-way stretch outer for a snug, comfortable fit
- Low stock - 4 items left
The Sealskinz Bircham is the original, midweight waterproof sock, in an ankle length that works with trail shoes, walking shoes and trainers. It's 100% waterproof and thermoregulating, with a merino wool inner that keeps your feet comfortable across a wide range of temperatures, so it suits fast-paced activity as well as slower days on the trails.
Sealskinz is a trusted brand in the outdoor community, and the Bircham is their original, military-endorsed sock. It's a favourite for hiking, trekking, trail running and mountain biking.
Backed by the Sealskinz Lifetime Waterproof Guarantee. Sealskinz guarantee their waterproof socks, gloves and hats to stay waterproof for a reasonable lifetime of the product. If it stops being waterproof through normal use, it's covered, and we'll help you get it sorted. See the full guarantee terms.
Key features
- 100% waterproof and breathable
- Thermoregulating merino wool inner layer
- Midweight, for a wide range of temperatures
- 4-way stretch outer for a snug fit
- Over 50% recycled or natural, responsibly sourced materials
- OEKO-TEX, PFOA and PFAS free
- Black/Grey, in sizes M and L
How it's built
- Outer: extra-durable polycolon and nylon blend with 4-way stretch for an optimal fit
- Middle: Aquasealz waterproof membrane that releases moisture vapour from inside the sock
- Inner: merino wool blend for comfort and sweat-wicking, with natural antimicrobial properties that help stop odour
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
Size guide
| Size | UK shoe size | EU shoe size |
|---|---|---|
| M | 6 to 8 | 39 to 42 |
| L | 9 to 11 | 43 to 46 |
Waterproof socks are thicker than normal socks, so if you're at the top of a size range (for example UK 8 to 8.5), size up.
Care
Wash at 40°C. Low tumble dry or drip dry. Do not dry clean, iron or bleach.
Want more coverage? The Sealskinz Raynham uses the same waterproof construction in a mid-length sock.
All orders are dispatched within 24 hours, and most customers receive their delivery within just 2 days.
Standard Delivery – Free on orders over £60. Arrives in 2–4 business days.
Express Delivery – Available at checkout for faster delivery. Arrives in 1–2 business days.
Note: on rare occasions items may ship from different locations, which can mean more than one shipping charge on your order.
We offer a 30-day hassle-free returns policy. If you’re not completely satisfied, return your item in its original unused condition for a full refund or exchange.
We respond to all emails within 24 hours. To start a return, email us at info@hikeware.co.uk with your order number and reason for return, or message us directly on WhatsApp.
Yes, it uses an Aquasealz waterproof membrane that still lets moisture vapour escape.
Yes, it's covered by the Sealskinz Lifetime Waterproof Guarantee. If it stops being waterproof through normal use, get in touch and we'll help you sort it.
M fits UK 6 to 8, L fits UK 9 to 11. They're thicker than normal socks, so size up if you're at the top of a range.
Yes, the Sealskinz Raynham uses the same construction in a mid-length sock.
Yes, standard delivery is free on all orders over £60. Orders under this amount are charged a small delivery fee at checkout.
All orders are dispatched within 24 hours and most customers receive their order within 2 days. Standard delivery takes 2–4 business days, and express delivery (1–2 business days) is also available at checkout. On rare occasions, an order may contain items that ship from different locations. When this happens, your order may arrive in more than one parcel, and the shipping cost shown may reflect more than one shipping charge combined.
Absolutely. We offer a 30-day no-hassle returns policy. Simply email us at info@hikeware.co.uk with your order number and we'll sort everything out for you. We respond to all emails within 24 hours.