Total Waveless KING Size Waterbed Mattress with FREE Fill&Drain Kit Vinyl 15 Year Warranty, Comes with FREE Fill and Drain Kit Heavy Duty Vinyl with Extra Wide Corners Heavy Lumbar Support, your body will be more level One layer of Head to Foot Closed Cell Buoyancy Layer which allows for consistent fiber flotation It has at the most 0-5 seconds of movement due to its Five Layers of 2 oz. Resin Bonded Fiber