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Cold feet end more winter days than cold anything else — and the standard fix makes it worse. When feet...
"What's the warmest thermal you make?" is the question we've heard most often since 1985. It's the wrong question by...
Skiing has a layering problem no other sport has: you generate serious heat for three minutes, then sit nearly still...
Your face is the one part of your body you can't layer — and on a chairlift at 20 mph...
Kids lose heat faster than adults. They have more surface area relative to body mass, they stop and start constantly...
Warmth Factor, GSM, fit, and sizing explained for men, plus what to actually wear underneath. A practical guide to choosing a Hot Chillys base layer.
Merino absorbs moisture, synthetic repels it. That single difference decides drying speed, odor, durability and cost. Here is the honest comparison, and why Hot Chillys builds synthetic base layers by design.
Four decisions get you the right women's base layer: Warmth Factor, fabric weight, fit, and size. Here is how Hot Chillys rates each one, plus full size charts and why GSM alone will not tell you how warm a base layer really is.