The original, military-endorsed Sealskinz Bircham All Weather Ankle Length Waterproof Unisex Socks. 100% waterproof and thermoregulating, the Bircham excels in high-intensity sports, as well as more relaxed outdoor pursuits.

Outer – Extra-durable polycolon and nylon blend, with 4-way stretch for an optimal fit.

Mid-Section – Aquasealz waterproof membrane releases moisture vapour from inside the sock.

Interior – Premium merino wool for comfort and sweat-wicking. Natural antimicrobial properties, inhibiting growth of odour-causing bacteria.

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.

Brand : Sealskinz

SKU: SEAL-SS11123060

Model # : SS11123060

Gender : Unisex

Thickness : Medium

Sock Length : Ankle

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

Free shipping on orders over $140 to Australia*
Shipping on small orders (under $140) only $9.95
Shipping on all orders to NZ only $9.95
Express shipping to Australia & NZ only $15

Standard Shipping (AU) – FREE on orders over $140 and $9.95 on orders under $140. Orders are dispatched within 1 business day. Click here for shipping delivery times

Select ‘Standard Shipping – Auspost Only’ if you would prefer your parcel is sent with Auspost. Otherwise it will be shipped with any of our available carriers. Auspost Only shipping is not available on some very heavy/bulky orders.

Express Shipping (AU/NZ) – Need it faster? Express Shipping is available for $15. Express Shipping is not available on heavy/bulky orders. Orders placed before midday on business days are usually dispatched same day (otherwise within 1 business day). Delivery times in the table below.

Click and Collect – Shop online and collect in our Milton, Brisbane store, free for all orders. Orders are usually ready within 2 hours (during opening hours). Click here for address and opening hours.

Terms and conditions apply, click here for a full overview of our shipping policies

Manufacturing defects covered, replaced or repaired if soon after purchase.

  • If you have selected the wrong product/size for you, or want to exchange/return for any reason except for warranty or our error, this is referred to as a 'change of mind' return.
  • Not all products are eligible for change of mind returns (click here for excluded products).
  • Once you submit a Return Request, we will provide return instructions via email (along with a prepaid return label if applicable). Please wait to receive this before returning any items (Try 2 Anything excluded)
  • Change of mind returns can be resolved by your choice of exchange, full store credit, or a refund. Refunds are subject to a $19.95 admin fee.

For a full overview of our returns and warranty policies, see Returns and Warranties

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