Mattress, Memory Flex 5.0: Dartex™ Pressure Reducing 4-Way Stretch Cover. - 3 Layers, (Top Layer is 5.0 lb Viscoelastic 'Memory Foam'), 4 Zones, (Head/Shoulder, Torso, Calf and Heel Zones); 550 lb weight rating. - 7 year Full Non-Prorated Cover & Core Warranty. - For Braden Scale 2, 3 and 4. - Interface Pressure tests show 75% Pressure Relief, 25% Pressure Redistribution Capabilities. - 100% Medical Grade Fabric and High Density foam; Exceeds OEM bed frame manufacturer's mattress specifications. - Firm Internal foam side rails; 4 Reinforced Handles; Low Slip Bottom. - Fluid proof Dartex™ Pressure Reducing 4-Way Stretch fabric cover. - All materials are: anti-bacterial, anti-fungal, anti-static; stain and tear resistant, radiolucent, & Latex and artifact free. - All materials exceed fire standards Cal TB 117, 16CFR-1632 - Optional fire barrier to meet Cal TB 129, 16CFR 1633, BFC IX 11. - No Cost Options Are: No Zipper, No Handles, No internal foam side rails. Optional Anti-Shear Liner. - Width & Length Extensions Bolsters Available. Custom Sizing & Shapes Available.