The Back brace contains 4 Memory-aluminum stays that are quadruple harder than the commonly used PP strips,and 2 steel springs placed along the waist side, offer 360° vertical support to lower back,prevent excessive rolling of your muscles and decrease the pressure on your discs. The back support made of 4-way stretch elastic material,3D knitting technology by different compression levels, for superior fit,breath and comfort. The inner layer is made of velvet fabric, giving an ultimate baby-skin-like silky touch,perfect for dressing internally. Back support with 2 elastic straps are designed to add extra compression around lower back to prevent back injuries from weight lifting, long time standing or sitting, doing housework, working, etc. Relief waist muscles ache, disc herniation, sciatica, scoliosis etc when wearing the back belt. 2 Silicone anti-skid bands are designed on the 2 sides of the waist,prevent the waist support belt from rolling up when sitting, bending or doing other activities.The widen size hook and loop fastener of 2 elastic straps provides strong adhesion far beyond your expectations, made of PVC material that usually used for babies clothes,will not scratch your skin or damage your clothes. The waist support adopts seams, the quality is strictly controlled, and it is very . Name: Waist support. Material: Nylon,Latex silk,Spring. Color: Black. Size: M/L/XL. M: Suit for waist circumference 63-77cm. L: Suit for waist circumference 77-97cm. XL:Suit for waist circumference 97-117cm. Package included: 1PCS x Waist support. You can use it not only while sitting in front of the computer or driving, but also while exercising or gardening.Improve your overall posture at work or in life. Relief waist muscles ache, disc herniation, sciatica, scoliosis etc when wearing the back belt. Back support with 2 elastic straps are designed to add extra compression around lower back to prevent back injuries from weight lifting, long time standing or sitting, doing housework, working, etc. The inner layer is made of velvet fabric, giving an ultimate baby-skin-like silky touch,perfect for dressing internally. The back support made of 4-way stretch elastic material,3D knitting technology by different compression levels, for superior fit,breath and comfort. The Back brace contains 4 Memory-aluminum stays that are quadruple harder than the commonly used PP strips,and 2 steel springs placed along the waist side, offer 360° vertical support to lower back,prevent excessive rolling of your muscles and decrease the pressure on your discs.