TECH Air Belt Lumbar SupportInflatable multi celled air chambers. Palm grip self contained aspirator with pressure release valve. Breathable inner lining. Lightweight and durable rip stop nylon outer cover. Adjustable hook and loop closure. Benefits: Provides abdominal and back support Helps reduce muscular lower back discomfort Lightweight comfortable for all day wear Does not restrict mobility when bending, twisting, sitting or walking Promotes proper back alignment