💤 Sleep Like Never Before: Dive into the ultimate comfort! Designed for full depth rigid side box frames, ensuring a snug and secure fit. Crafted with 20 mil premium vinyl for long-lasting comfort and support. Compatible with approved waterbed heaters and conditioners for effortless upkeep. Double reinforced corners ensure durability and stability for years to come. Indulge in a gravity-defying sleep experience with our zero wave elimination system. Full Wave Performance Gravity Neutral Support 20 Year Warranty The INNOMAX Sanctuary Free Flow Full Wave Waterbed Vinyl Mattress offers a luxurious sleep experience with its innovative zero wave elimination system and gravity neutral fluid suspension. Designed for full depth rigid side box frames, this mattress features a durable 20 mil premium vinyl surface and a 20-year warranty, ensuring long-lasting comfort and support. With double reinforced corners and a low tension design, it promises stability and ease of maintenance, making it the perfect choice for a restful night's sleep.