hydrostatic head ratings
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When 10,000mm Fails in Heavy Wet Snow
Yes, 10,000mm waterproofing is enough for heavy snow in most lift-served and day-tour scenarios; no, it is not enough once wet Pacific snow, a loaded pack, and hours of sitting stack up. I ran a 10k/10k shell for three seasons in the Cascades and Rockies, and it failed only where physics said it would. If…