4-way Stretch, Pressure-Reducing Cover with Anti-Shear Liner. - 3-Layer Core UltraFlex Construction: High-density Foam Base. - Middle Support Foam Layer and 5.0 lb Viscoelastic Memory Foam Top Layer. - 2 year Full Non-prorated Cover & Core Warranty. - 100% medical-grade fabric and foam. - Fluid-proof cover with low-slip bottom. - Mattress meets or exceeds OEM stretcher frame manufacturer's specifications. - Adhesive Velcro® included for a more secure attachment to the stretcher frame. - Square or Tapered corners. - All materials are: anti-bacterial, anti-fungal, anti-static, stain- & tear-resistant, radiolucent, and latex & artifact-free. - All materials exceed fire standards Cal TB 117, 16CFR-1632. - Custom Sizing & Shapes Available.