Nikwax Tent & Gear Solarproof waterproofs nylon- and polyester-surfaced products. Suitable for items that do not use breathable materials. A good choice for treating backpacks, rucksacks, tents, running shoes, coveralls, tarps, and camera bags. Note! This product cannot make a non-waterproof fabric waterproof - this is a care product for waterproof materials. Note! Do not use this on technical clothing or footwearthe product is not suitable for use with breathable membrane materials. - Recommended treatment, for example, for Hillebergs Kerlon tent fabric - Protects the treated product against UV radiation - 500 ml bottle of treatment - Dosage guideline: 500 ml is enough to treat, for example, a 2-person tent, a backpack, or saddlebags. 100 ml is sufficient for treating a camera bag.