Nikwax Tent & Gear SolarProof adds Durable Water Repellency (DWR), to the maximum testable standard, and ultraviolet (UV) protection, to inhibit the reduction of fabric tear strength caused by UV rays.High performance waterproofing and UV blocker for all synthetic weatherproof textilesAdds a Durable Water Repellent treatment to fabricProvides UV protection and reinforces materialWaterBased environmentally friendly formulaConcentrated - just add waterRecommended activity - gear care