Boyd's King Total Waveless w/Lumbar Support Hardside Waterbed Mattress Kit includes liner and fill kit Total Waveless, Stand up Liner, Fill & Drain Kit, Lumbar Support Highest Quality Heavy Duty Vinyl, generously cut for contoured support Double Thick Reinforced Corners that add durability Comprehensive 15 Year Limited warranty 3 laryer ergonomically designed lumber support, 2 additonal Layer wave reduction System