Waterproof Rating
Waterproof Rating
The water column rating (mm) indicating how much water pressure the fabric can withstand before leaking. Higher numbers mean better waterproofing.
Typical range: 5000–30000 mm
5,000-10,000mm is adequate for light snow and occasional use. 10,000-15,000mm handles most resort conditions well. 15,000-20,000mm is ideal for wet coastal climates and deep powder. 20,000mm+ is for extreme conditions and professional use. Remember that seam sealing and DWR coating also affect real-world waterproofing.











