Luxury Support Waterbed Mattresses - created to capture the complete comfort only true fluid support can provide. Generously overcut and vacuum formed domestic low cadmium vinyl, 3 dimensional Quadra Guard corners, Eeezy-Burp Air Release Valves, exceptional Mid-Body Support and an extra strong internal tethering system are only a few of the innovative features that make Luxury Support waterbed mattresses an industry leader in Traditional Flotation!