This mattress overlay provides comfort and support while laying down. It is easy to secure and maneuver. You'll wonder how you slept without it! Features: Horizontal chambers encapsulate gel with foam beads to conform to the patient's body Standard foam top layer for comfort and support Lighter than other overlays for ease of handling Nylon top cover with skid-resistant vinyl bottom cover Fluid-proof cover Sturdy elastic straps secure corners of overlay to a mattress Dimensions: 34 x 76 x 3" (86 x 193 cm x 8 cm)