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Smartwool Men's Mountaineering Extra Heavy Crew Socks

£16.77£24.00(Save 30%)

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Give your feet the support, protection and care they deserve when walking with the excellent Smartwool Men's Mountaineering Extra Heavy Crew Socks.

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Product code: 15896433 / 111633

Slip a pair of Smartwool Men's Mountaineering Extra Heavy Crew Socks over your feet and you can be sure that they will be afforded total protection in terms of padding, breathability and comfort no matter how far your walk.

They have reinforced soles to help prolong the sock's lifespan and more importantly help cushion your feet against the continual pounding they receive when hiking uphill, climbing or multi-day backpacking.

Created using 72% Merino wool, 26% Nylon and 2% Elastane they wick away moisture quickly and easily - they dry swiftly too after washing - so you can be sure your feet will remain in tip top condition.

And to help hold the sock in place there is also an arch brace, and to ensure you remain comfortable there's a flat-knit toe seam.


Smartwool size guide





2 – 4.5

34 – 37


5 – 7.5

38 – 41


8 – 10.5

42 – 45

X Large

11 – 13.5

46 – 49

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83% Merino Wool, 16% Nylon, 1% Elastane
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This product qualifies for the following delivery methods

Standard UK Delivery (Up to 10 Days) (£3.95)

FREE on orders over £70.00


A tracking link will be provided once your order is despatched.

Premium Express Delivery (£6.95)


A tracking link will be provided once your order is despatched.

Bike Delivery (Up to 10 Days) (FREE)


This applies to all bikes, and these orders are upgraded to a specialist courier service.

Free Standard In Store (FREE)


Collect In Store (FREE)


Delivery times and days vary for each store, but we will contact you when your order is ready to collect. Please do not contact our Customer Care team for updates until after the estimated delivery time in your order confirmation email.

Premium Next Day (£6.95)


Next day cannot be offered in the following areas, and will be attempted within 48 hours: BT (all Northern Ireland), GY, IM, JE, KW11-17, HS, PH32-35, ZE.

International delivery

From £4.99 to over 200 countries worldwide. Some restrictions apply.


Returning orders to us is easy. Whatever your reason, we offer a refund or exchange within 28 days of delivery or collection.

Size guide

Small 2 - 4.5 34-37
Medium 5 - 7.5 38-41
Large 8 - 10.5 42-45
X Large 11 - 13.5 46-49

Mens Smartwool Socks size guide

Measuring tips

By using the size table and your normal shoe size you will be able to find the correct size of Smartwool socks you need. Smartwool socks do not shrink or stretch.

Remember, it's important that your walking socks are not too loose or they can bunch up and cause irritation or blisters.

Ratings & Reviews

Overall Rating

4.57 out of 5
7 reviews
Write a review
4_5 out of 5

Good quality product at a reasonable price.

4_5 out of 5

Warm, snug and comfortable.

4_5 out of 5

As Above

4_5 out of 5

Good product I have been waiting for a good sock for years

4_5 out of 5

Good service prompt delivery..

4_5 out of 5

From past experience I know them to be excellent socks.

4_5 out of 5

great for hikingvery thick soles