Product Details: Fits and Supports. Amazing peace of mind for your lower back. ■Point 1 Easy and Powerful Lower Back Stabilization with Pulley System Utilizes the principle of pulleys to firmly support the lower back area. ■Point 2 Comfortable even for long hours of wear. Pleasant fit. High-density knit fabric, seamless construction, Lumbar Core. ■Point 3 One size fits various body types. Accommodates waists up to 110cm with the attachment. ■Point 4 Easy to care for, hand washable.