The WaterMat EX-Plus is our top seller for good reason! With the WaterMat EX-Plus, you get all the benefits of the original and genuine WaterMat EX...PLUS more! Two distinctly different surfaces on one product: A pillowy DiamondTop surface on the "lounging" side and a new slippery-er "play" side Four more feet of fun: The EX-Plus is 22 feet long and five feet wide vs. the EX at 18 feet X 5 feet The Ex-Plus is 2 inches thick vs. the EX at 1.25 inches thick...the thicker EX-Plus is more buoyant High quality grommet and tethering system included. The EX Plus uses our Double Grommet System for stability and security. Plus, a two year limited warranty! We know that quality and durability are both important to you As with all of our products, the same "WaterMat Difference" is baked into the EX-Plus. Our webmaster made a goof last year and the EX-Plus reviews got mixed in with the EX's, so we apologize for the lack of EX-Plus reviews here, where they rightly belong. And, if you watch the WaterMat Quality Challenge and think that the WaterMat EX is impressive, the WaterMat EX-Plus is even MORE durable.