Heavy duty repellent with polymers that cross-link for maximum waterproofing and durability in a single application For tents, boots, outdoor clothing, tarps, boat covers, back packs, golf bags, umbrellas, luggage, flags,etc. Allows leather and fabric to breathe. Scent free when dried and cured. Safe for use on Gore-Tex? and all waterproof breathable fabrics. Contains U-V-BLOCK? to protect colors and fabric from sun damage. Contains a fungicide to protect the invisible coating from odors and discoloration caused by mold, mildew, fungus and algae.