12 percent silicone formula creates durable, long-lasting waterproof bond to repel water, dirt and oilSpecifications and Features: 100% NULL Imported 12 percent silicone formula creates durable, long lasting waterproof bond to repel water, dirt and oil Aerosol can offers easy application Ideal for use on hiking or work boots, tents, camping and outdoor gear Not recommended for breathable technical fibers (such as gore tex) or athletic shoes, as silicone could discolor or diminish performance functions