Grangers Tent + Gear Repel is a spray-on waterproofing treatment designed to protect all outdoor gear and equipment from rain and stains. Over time, and with use, even the best outdoor gear will begin to lose its ability to repel water. This is because dirt, dust, and other impurities, as well as general wear, will remove any water-repellent finish your gear may have been treated with. Cleaning your gear can help, but eventually it will need reproofing with a water-repellent product. Tent + Gear Repel spray restores the water-repellent finish and helps to protect against stains, ensuring that you are protected in any conditions and prolonging the lifetime of your gear.