INNOMAX Genesis 700 Semi Waveless Lumbar Support Waterbed Mattress, King Genesis 700 Semi Wave less Deep Fill King Waterbed Mattress for full depth rigid side box frame Semi Wave less Performance and 20 year warranty Enhanced Wave Reduction featuring Semi Wave less Performance and gravity neutral fluid suspension mid-body support system Multi-Layer wave elimination system and 22 mil premium paralyzed vinyl Body Profile sleep surface generously overcut Low Tension Mattress design 4 Way tethered support system for Integrated Internal Component Stabilization and recessed black bottom L Seam construction Use with approved Waterbed Heater Waterbed Safety Liner Waterbed Water and Vinyl Conditioner Do Not Fill above Safety Liner