The Atsko Water-Guard Extreme 12 oz. repels water 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 and all 24/7 outdoor fabrics. This product contains a fungicide to protect the invisible coating from odors and discoloration caused by mold, mildew, fungus and algae. Atsko provides products and information to get maximum performance from footwear, clothing and sporting goods. Over the past twenty years, Atsko has created new products for extreme challenges. These specialty products outperform typical household brands and give better results for less money while adding additional benefits.