Linings for fitting an object to a body part, and their use, are provided. The lining may include a flexible sheet having a fluid impenetrable outer portion enclosing an internal volume and the lining may include barriers forming a number of compartments substantially secured in place within the internal volume. The barriers may be permeable to gas and/or liquid, yet may be impermeable to the conformable material and the gas and/or liquid may be supplied to or aspirated from one or more compartments within the internal volume. Aspiration of gas and/or liquid from the internal volume may limit both deformation of the conformable material and shape adjustment of the flexible sheet.

Linings for fitting an object to a body part, and their use, are provided. The lining may include a flexible sheet having a fluid impenetrable outer portion enclosing an internal volume and the lining may include barriers forming a number of compartments substantially secured in place within the internal volume. The barriers may be permeable to gas and/or liquid, yet may be impermeable to the conformable material and the gas and/or liquid may be supplied to or aspirated from one or more compartments within the internal volume. Aspiration of gas and/or liquid from the internal volume may limit both deformation of the conformable material and shape adjustment of the flexible sheet.