Wheelchair Fork Bearing only Scales Baby 54 57 * Four flexible E1 3 54 57 * Four flexible metal stays provide posterior compression while the 4 premium elastic side pulls provide adjustable abdominal compression * Measurement is hip circumference * Quality shoulder straps help provide upper body support and encourage wearing of the support during rest periods 46 54 * 8 wide double ply three panel elastic belt features a posterior pocket for moldable insert (sold separately) * Dura Foam front panel closes with pressure sensitive hook * Measurement is hip circumference * Provides even compression to abdomen as well as lumbosacral area Parts for POLYFLY POLYWOG: Wheelchair Fork Bearing * 12mm Inner 28mm Outer 8mm Thickness * 1 ea