Restores water repellent finish to waterproof garments and equipment leaving a patented abrasion resistant finish. Use Storm Spray-on Apparel Proofer to restore water repellency and improve breathability in technical outwear. PFC, PFAS, & PFOA free formula Suitable for cotton & synthetics including Gore-Tex, Sympatex & eVent. Precision application to target high abrasion areas Patented air-cure activation abrasion resistant finish Storm spray on air-cure apparel proofer uses revolutionary air cure technology. Shoulders where backpacks rub & cuffs on jackets are prime examples of areas that are susceptible to damaged DWR and subpar performance when not treated. Specifically designed for use on technical outerwear & gear including those with membranes. Use Storm Apparel Proofer with: WATERPROOF OUTERWEAR GORE-TEX, SYMPATEX & EVENT SKI APPAREL TECHNICAL MOTORCYCLE APPAREL