Vinyl Very comfortable Mattress Manufacured By Classic with a 12 year warranty Mattress is made out of rich virgin vinyl with reinforced corners This is the original style semi wave water mattress with 8-10 seconds of movement For Wood frame Hardside Waterbed Experience the perfect blend of comfort and support with our Queen Size 60x84 Semi Waveless Waterbed Mattress. Crafted by U.S. Water Mattress, this mattress features a rich virgin vinyl construction with reinforced corners, ensuring durability and longevity. The semi wave design offers just the right amount of movement, providing a unique sleeping experience with 8-10 seconds of motion. The mattress is filled with memory foam for added comfort and comes with a 4oz bottle of premium clear bottle conditioner and fill kit adapters. Measuring 37.85 x 22.1 x 46.74 inches, this mattress is designed to fit perfectly on a wood frame hardside waterbed. Enjoy a 12-year warranty for peace of mind.