Air-filled bed mattress overlay

Air-filled bed mattress overlays are static-air-inflated pads or thin mattresses placed on top of a standard bed mattress to distribute body weight over a large surface area. They are primarily used to relieve pressure points and prevent pressure sores in patients who are immobilized, elderly, disabled, or have low body fat.

These devices are typically reusable and regulated as medical devices, though their specific classification may vary by jurisdiction. They are designed to be placed on existing mattresses and provide pressure redistribution without the need for complex mechanical systems.