Waterproof Ratings Explained: What the mm Actually Means
What the mm on a waterproof jacket actually means, the ratings scale from showerproof to mountain-ready, and how much waterproofing you really need in Irish weather.
53 Degrees North |
53 Degrees North Outdoor Blog
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Trail-Ready Waterproof: How 10,000mm Ventron™ Performs
A waterproof rating measures a fabric's resistance to water penetration in millimetres specifically, the height of a water column the material can hold back before moisture pushes through. A jacket...
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