CLAMP STYLE * 16 W x 16 H * Designed for mild postural needs * Provides mild posterior pelvic-stabilization * Provides mild thoracic support * Facilitates thoracic extension * Lightweight for improved propelling efficiency and ease of transport * Lightweight contoured aluminum shell and soft foam-insert * Creates minimal loss of seat depth * Provides mild lateral support * Includes an light weight aluminum shell foam both a 0 and 8 top mounting hook and the choice of clamp or strap style hardware * HCPCS Suggested Code: E2611