The Molnlycke Z-Flex Heel Boot is a protective boot designed to prevent pressure and pressure sores on the heel and Achilles area. These boots come with three adjustable shin straps and two adjustable ankle straps and will fit most users. The adjustable ankle straps support the foot and ensure it is held in a natural and anatomically correct position. In addition, the Z-Flex boot has a pressure ulcer viewing door build into the bottom of the boot. This door can easily be opened to assess the condition of existing pressure sores without the pain and stress of taking the entire boot off. In addition to these benefits, Z-Flex heel protection boots are made out of a temperature regulating material to enhance patient comfort. sold individually!