The HO Sports Fiji iLand Inflatable Mat is 8' x 5' and 6" thick. The Fiji's DropStitch construction is so rigid and durable you wouldn't know it's inflatable unless you saw it being inflated. The secret tothe Fiji's stability is the ballast bags which are located under the 2 opposite corners of the Fiji. Once submerged, these ballast bags fill up with water and work amazingly well to keep the Fiji from shifting side to side and from tipping. The Fiji comes with its own electric pump which makes inflation a breeze. The HO Sports Fiji iLand Inflatable Mat can be used it to lay out in the sun, let the kids play king of the hill, as a mobile dock to store your gear, as a starting platform or simply set up a lawn chair and a cooler and cast your Line in the water.