Blue Jay Lumbar Support SM Small 27.5 31.75 Blue Jay Hydrocollator Moist Heat Packs Top number (systolic) in mm 14804 Top number (systolic) in mm Hg * Seat & back can independently articulate with ease even with individual in chair * The mesh vinyl sling drains well and removes easily for washing * All 3 sizes can fold flat for easy hanging storage * Full head & trunk support * Light rust proof frame * Ships via UPS * Color choices: yellow tan mauve forest green red black grey light blue royal blue white navy teal (mesh only) mint (vinyl only) clear (vinyl only) OR for an additional cost Fern Dance Floral Montego Floral Sierra Sands Tweed Small fits waist circum injuries to the lumbar discs and the sacro illiac joint * 2 flexible internal stabilizers * Elastic side straps for custom compression * Breathable and moisture wicking * Color: beige