A cost effective way to reduce pressure for those confined to bed or simply an added support and weight distributor to enhance anyone's rest and improve sleep. The 3 or 4 inch thicknesses provide added comfort, pressure relief and longevity. Investing in an expensive, high tech mattresses may not be an option, or your insurance may not cover it. These are priced reasonably allowing replacement when become soiled or become worn out over time. TIP: You can easily cut them to fit in favorite recliners and wheelchairs.