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Description
Experience ultimate comfort and performance with Darn Tough's Mountaineering Heavyweight Over-the-Calf Socks. Crafted for serious adventurers, these socks offer unbeatable warmth and durability during demanding activities in extreme conditions. With advanced moisture-wicking properties, they keep your feet dry and comfortable on long treks. The merino wool blend ensures all-weather performance, offering warmth in cold temperatures and breathability in warmer conditions.
Designed for mountaineering, hiking, and other strenuous outdoor activities, these socks feature a cushioned sole for impact protection and extra comfort. The over-the-calf design provides added warmth and coverage, making them ideal for extended wear in the harshest environments. With their True Seamless technology, you’ll experience an irritation-free fit that reduces blisters and hot spots.
The Darn Tough Mountaineering Socks are backed by a lifetime guarantee—if they wear out, they’ll be replaced. Made in the USA with top-quality materials, these socks deliver premium performance for outdoor enthusiasts.
Extra Product Details
Material: 68% Merino Wool, 30% Nylon, 2% Lycra Spandex
Height: Over-the-calf
Color: Charcoal
Sizes: M (7.5-9), L (9.5-11.5)
Features: Moisture-wicking, cushioned sole, True Seamless construction
Care: Machine washable
Made in: USA
Shipping & Delivery
Shipping & Delivery
Delivery is free on all UK orders over £50.
For UK orders under £50, and for international destinations, delivery costs are calculated at checkout before payment.
Standard tracked shipping usually takes 7–12 days unless a product page or checkout shows a different estimate.
You will receive tracking details by email as soon as your order has been dispatched.
Returns & Exchanges
We want you to be fully satisfied with your B&G purchase. If something doesn't feel right, you can request a return.
Return period
You can request a return within 30 days from the date you receive your order, as long as the items are unused, unwashed and with all original tags attached.
How to request a return
Send us an email at support@blegant.com with your order number and the items you wish to return. We'll reply with further instructions and the return address.
Conditions
- Items must be in original condition: unworn, unwashed and free of stains, odours or damage.
- For hygiene reasons, underwear and socks cannot be returned unless faulty.
Refunds
Once your return is received and inspected, we'll process your refund to the original payment method. Depending on your bank or payment provider, it may take a few working days for the refund to appear in your account.
Size guide

Find your best fit with the B&G size guide. Measurements can vary slightly by brand, so always check the size selector on each product page before ordering.
Women's clothing: UK 6 = XS, UK 8 = S, UK 10 = S/M, UK 12 = M, UK 14 = L, UK 16 = XL, UK 18 = XXL.
Men's clothing: S = 36-38 in chest, M = 38-40 in, L = 40-42 in, XL = 42-44 in, XXL = 44-46 in.
Footwear: use your usual UK size. If you are between sizes, check the product notes and choose the larger size for boots or trainers.
Fit tips: for fitted styles, choose your usual size. For a relaxed everyday look, size up. If you need help before ordering, email support@blegant.com and we'll be happy to help.