Nikwax Tent and Gear SolarProof adds DWR, increases fabric strength & protects against UV deterioration.One application can double the effective life of fabrics, by protecting against UV damage, while also providing Durable Water Repellency (DWR) to keep the rain out.It can be applied to wet or dry synthetic fabrics.Easy to use high performance UV protector from NikwaxSpray on water-repellent, UV blocker for all synthetic weatherproof textilesWater-based, non-aerosol, non-flammable, non-hazardous and environmentally friendlyContains no harmful solvents or volatile organic compoundsFluorocarbon freeAlways read the care label and instructions of use