Depending on the intensity of use, we recommend re-waterproofing weatherproof jackets and functional trousers during or after every wash. Either using appropriate wash-in waterproofing treatments or, after washing, with a special waterproofing spray for textiles. It is easy to test whether the waterproofing is still fully effective: apply a few drops of water to the functional fabric and wait to see if they are absorbed into the outer fabric. If they bead up, the waterproofing is still sufficient.