Joerns XTB-0442 Foot Extension BolstersFoot End Extension That Completes the Bed Surface The UltraCare XT Mattress Foot Extension Bolsters are designed to fill the open space at the foot end of the mattress when the bed is extended, creating a more continuous mattress surface. These bolsters are made specifically for the Joerns UltraCare XT Home Care Bed and are used when additional bed length is required. Warranty Information 90 Days Warranty