Based on a new design, the Supreme Hybrid uses more massaging airbags than ever for a total-body experience. 50 built-in airbags use compression technology to massage muscles in the arms, shoulders, waist, legs, and feet. Precisely programmed to rhythmically inflate & deflate in concert with the mechanics of the chair, the layered airbags give a gentle yet effective compression massage that treats muscles of the arms, legs, and hips.