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Warm Up 'Dem Chilly Dogs

Adventure

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If you’re a finicky skier who wants toasty toes, stop fiddling with that aluminum foil and insert a pair of Shock Doctor’s HotBeds into your ski boots. Made of the same material—a porous solid called aerogel—used in NASA space suits, the new HotBeds are just 2.5 millimeters thick but purportedly insulate as well as eight millimeters of 200-gram Thinsulate or four inches of fiberglass wall insulation. The svelte profile shouldn’t compromise fit or performance. And they’re less messy than dumping cayenne into your socks. ($20, shockdoc.com)