Features: 24 air columns provides strong support and helps relieve all back pain like spinal disc, sciatica, scoliosis, herniated disc, and more. Adopted traction design principle, the spinal traction belt can achieve continue traction and supported function. You can use the back belt at anytime and any place when you are working, washing, watching, etc. Adjustable size fits all. Comes with a extension belt that measures 0.75ft, no worry of size problem. Easy to use. Simply inflate it and it will keep your lower back stable and stretching the spine. Cottony lining is soft and smooth, safe to touch your skin directly without irritation. Multiple air holes make it comfortable to wear without causing stuffiness. Well-made hook and loop strap features strong adhesion, it can stay closed and hold up well for a day. Traction time can be catered to the needs of patients. Normally 15-30 mins per session, and once or twice a day. Note: *Read the user manual carefully before use. *Do not block the small hole on the bottom of the pump. Specifications: Brand: LEAMAI Material: TPU, PU leather, Cotton Color: White Size: M/L(optional) Suitable Waist Size: 60-130cm / 1.96*4.26ft Extension Belt Length: 23cm / 0.75ft Item Size: 114*14cm / 44.88*5.51in Item Weight: 389g / 12.83oz Package Size: 29*20*8cm / 11.41*7.87*3.14in Package Weight:  678g / 21.8oz Packing List: 1 * Back Brace 1 * Inflator 1 * Extension Belt 1 * User Manual(English)