Five individual baffles allow even movement of water to reduce pressure and conform to the body. Foam lining surrounded by heavy-gauge vinyl keeps cushion temperature comfortable. Two sealed seams provide extra strength and durability. Easy to clean vinyl cover is bacteria and odor resistant. Reinforced grommets at each corner can be used to secure cushion in place. 250 lb maximum weight capacity. Six-month limited warranty. Dimensions: 16.5" x 18" x 3". This cushion does not arrive filled with water. It requires warm water from a tap or hose.