The power edge plus pack turns old and warn air bed edge supports into new with just a few simple steps. Designed to replace soft side air bed Rail systems & restore comfort. Also includes anatomic 5-zone comfort layer & cotton plush bed topper to restore comfort on the sleeping surface. Memory weave wrapped foam perimeter support: edge support offering comfort and support whether sitting on the side or lying on the mattress. The memory weave provides our power edge with a "no bow" design increasing the durability & longevity by not allowing oxidation of the foam. Anatomic support layer: this is not your typical "egg-crate" foam pad. 5-Zone foam is manufactured with extra-thick, high-density polyurethane, convoluted foam. High quality convoluted foam provides gentle comfort and durability! formed with a unique combination of five distinctive zones to reduce stress on the pressure points and provide customized support for your entire body. Cotton plush bed topper: treated with nanotex for long lasting protection which resists spills & releases stains. Convert-a-fit convertible versa fit design provides an exquisite fit on all mattress styles - high profile, waterbed, conventional & more! twice the fill of normal mattress pads. Fits mattresses up to 18 inches thick which is ideal for today’s super pillow top mattresses. Machine washable and dryable. Luxurious comfort quilt. 4 year limited warranty.