Criss Cross Back Support 42 48 X Large Wheelchairs Standard Small Base * 500 lb Instrument Accessories Small Base * 500 lb Padded cushion is specially designed for the left right or bilateral amputee *Black leatherette zippered cover *Leg extensions are approximately 1 2 of the seat width x 9 long *Overall length with Leg Extension is 25 *Overall thickness is 1 1 2 for the Narrow Adult Adult and X Wide models and have a 5 8 plywood base *The XX Wide (22 and larger) have an overall thickness of 2 1 2 and have a 3 4 plywood base *Meets CA 117 code *X Wide *20w x 25d *Bilateral Extension HCPC: L0625 * Crisscross style in front and back create firm compression yet flexible support * 9 wide in back 5 wide in front * Enclosed flexible stays to help prevent rolling * Closes with hook and loop * Hip Circumference 42 48 * Knee circumference 16 18