Advanced Zoned Pressure Relief: Three distinct zones with softer head and foot sections (36 IFD) for gentle cradling and a firmer middle (40.5 IFD) for spinal alignment; Dual-Layer Therapeutic Construction: Top layer cushions and redistributes pressure to help prevent pressure ulcers, while the supportive bottom layer adds durability and long-term comfort. Fortress Cellular Design: Innovative Fortress-shaped cells with extra-deep castellation cuts maximize pressure redistribution, enhance airflow for skin temperature regulation, and increase surface contact area for superior immersion and comfort Fortress Cellular Design: Innovative Fortress-shaped cells with extra-deep castellation cuts maximize pressure redistribution, enhance airflow for skin temperature regulation, and increase surface contact area for superior immersion and comfort Protective Waterproof Cover: Fluid-resistant, stretchable nylon top with welded flat zipper for enhanced moisture protection and easy cleaning; latex-free, DEHP-free, and flame-resistant; non-skid vinyl bottom prevents slipping on bed frames Perfect Fit + USA Quality – Measures 36" W × 84" L × 6" H, fits hospital bed frames, supports up to 350 lb, and is Proudly Made in the USA for dependable quality and performance.