The Klepper uses Montbell's original waterproof and breathable material, "Dry-Tec," which blocks rain while allowing water vapor from sweat to escape. It has a water pressure resistance of 20,000mm or more and breathability of 8,000g/m²・24hrs (JIS L-1099B-1 method). It is in a clean condition without any noticeable stains, but please understand that it is a used item. Thank you very much :-)))))