Mueller Green Adjustable Back & Abdominal Support helps protect against lower back pain, weakness and fatigue with maximum support. One size fits most. Made from recycled materials. One-handed cinching system instantly tightens for abdominal compression and lumbar support. Antimicrobial treatment controls or eliminates odors. Instant abdominal (stomach) compression and lumbar support for repetitive bending and lifting. Comfortable rigid posterior panels provide support for lower back muscles while helping maintain good posture.