Closed Heel Replacement Shell Replacement shell for the SBi Walker boot range with a closed heel element the same as the frame of the Modus 2.0 and Frame 2.0 Walkers Used in conjunction with the Upper Kit if a complete change is required. Sizes Either-foot, S (34-36), M(37-39), L (40-42), XL (43-45), XXL (46-48)
