RainGuard Hydro-Lok is a crystal clear water repellent formulated for fabric, but can be used as a temporary water repellent solution for porous wood, brick, concrete, and other masonry. It repels water, food, mud, and other liquids that cause stains and damage to cloth and leather. Hydro-Lok is a non-toxic water repellent that creates a micro-molecular chemical and mechanical bond between the water-repellent chemicals and the substrate. It is packaged in an easy to use trigger spray bottle, not a pressurized aerosol can, to protect the environment. Ideal for use on fabric, canvas, leather, wood, concrete, brick, and stone surfaces such as shoes, gloves, tents, patio furniture, outdoor umbrellas, outdoor pillows, and more.