Brightent Deluxe Heavy Duty Waterproof Cover Outdoor Indoor Patio Sofa Bench Protection (Sofa / Loveseat Cover--L147cm*W83cm*H79/58cm--XS35P) This item is made of 210D woven polyester(Oxford) material with PU coating, which is water-proof. And this cover has another important feature for water proof: Along the seam, from the inside, there is the seal tap. The tap provide much better function for water proof.