1. Suitable for hip circumference size 80 cm - 115 cm. Strap length: 112 cm. Belt width: 10 cm. Our non-restrictive design fits both men and women.2. RELIEVES JOINT PAIN & REDUCES SI JOINT INSULATION - SI joint helps sacroiliac joint (or "SI joint") which is hypermobile or inflamed, stabilised and reduces from Si joint function disorder. We strongly recommend that you wear the SI joint strap day and night at least two weeks. Do not put on the belt.3. Double adjustment and maximum comfort - SI joint belt is designed for a long time, which is the key to recovery and pain relief. The Wraparound Dual Belt design provides controllable compression and the secondary straps allow you to adjust the amount of additional compression to specific painful or inflamed areas. The breathable fabrics allow air and moisture.4. Lightweight and durable - the perforated neoprene used in the inner strap is lightweight, breathable and pilling resistant. The band fish material used in the secondary straps is breathable, elastic and pilling resistant.5. STAYS IN PLACE - Double elastic fish bands and unique curved shape keep the belt in place all day and night. The non-slip silicone strips on the inner strap prevent the strap from sliding up and down when you sit. You can wear it while doing physical activities and exercise.