SmartWool Mountaineering Extra Heavy Crew Socks, Grey

Product information

Extra-heavy cushioning in SmartWool's Mountaineering socks will keep your feet warm and comfortable while you're ice climbing, backpacking or mountaineering. They're designed with arch braces to hold the socks in place and a flat-knit toe seam for comfort.

Size guide:

  • M - 5-7.5
  • L - 8-10.5
  • XL - 11-13.5

As well as new socks, why not get some new underwear?

Eligible for International Delivery
83% merino wool, 16% nylon, 1% elastane
Washing Instructions
Machine washable at 30°C


Click & collect

Click & collect from John Lewis or Waitrose shops tomorrow from 2pm
375 participating John Lewis and Waitrose shops

Collect + from a local shop from tomorrow - postcode exclusions apply for Collect+ deliveries

5000+ participating Collect+ shops

Standard delivery in 5 working days


Named or Saturday UK delivery


Named day UK delivery pre-10.30am


International delivery not available


We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.

Q & As

Rated 5 out of 5 by 2 reviewers.
Rated 5 out of 5 by The Very Best.... This is my second pair and I wear them for work every day. Very hard wearing and cushion my feet fantastically. These are the best sock I have ever bought, I simply can't praise them enough. I would say they are a true four season sock, just right always. Only bad point is the price - but they do wear really well. 10 February 2013
Rated 5 out of 5 by Nice & long Gave as a present they were very pleased with socks 29 December 2012
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