The rear waist contains 3 steel plates and 2 plastic plates for solid support, making it easy to protect your waist and sustain your figure at appropriate place. It can relieve the lumbar pain caused by occupational disease, lumbar disc protrusion, sports exercise, longtime driving, etc. Features: 1.The rear waist contains 3 steel plates and 2 plastic plates for solid support, making it easy to protect your waist and sustain your figure at appropriate place. 2.It can relieve the lumbar pain caused by occupational disease, lumbar disc protrusion, sports exercise, longtime driving, etc. 3.Comfortable and breathable material, light, thin and durable, helps to drain sweat quickly. 4.Super strong hook&loop stick firm, and also for size adjustment, use it conveniently. 5.Tight line on the edge, wear-resistant with high tensile capacity for long term use, and meanwhile not easy to fall off. Specification: Item Type: Personal Care Material: Nylon + Steel Item Size: M, L, XL (Optional) M 98 x 21 x 1 cm / 38.6 x 8.3 x 0.4 inch L 108 x 21 x 1 cm / 42.5 x 8.3 x 0.4 inch XL 115 x 21 x 1 cm / 45.3 x 8.3 x 0.4 inch Item Weight: Approx. 238-269 g / 8.4-9.5 oz Function: Waist Support, Waist Brace Package Include: 1 * Waist Support