Where to Buy
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Here's what other sites are saying:
The Integral Designs Hot Socks are a warm refuge when taking off cold, wet socks.
Once feet get cold, it takes forever to re-warm them in a sleeping bag. Integral Designs Hot Socks are low-bulk PrimaLoft booties specifically designed for hanging out in cold winter camps. The 4oz PrimaLoft Sport insulation and Pertex P565 shell fabric ensure a system that is soft, comfortable, and water repellent. The back panel of Powerstretch fleece makes the Hot Socks easy to slide on and keeps them snug around the feet and ankles. The footpad is reinforced with abrasion-resistant 330D denier Cordura, which is suitable for use inside huts and tents but still soft enough for use as a sleeping sock.