This oversized inflatable is covered by the same super-strong nylon fabric used for rafts and tubes towed by speedboats. It is rugged and durable for years of poolside relaxing. This floating mattress is sumptuously comfortable with its integral pillow. Soak up the sun this season with our Ultimate Floating Mattress. Floating mattress measures a big 78” long by 34” wide. 200 lb. weight capacity.