parameter: Type: Belt Colour: Black Material: Mesh Size: L/XL/3XL/4XL/5XL (cm/inch) Size L: Length 37.8in/96cm Fits Waist 24.4-33.9in/62-86cm Size XL: Length 40.2in/102cm Fits Waist 25.2-37.8in/64-96cm Size 3XL: Length 44.9in/114cm Fits Waist 42.1-48.4in/107-123cm Size 4XL: Length 50.4in/128cm Fits Waist 46.1-53.1in/117-135cm Size 5XL: Length 55.1in/140cm Fits waist 50-59.1in/127-150cm packing list: 1*Adjustable waist training belt Features: 1 Helps relieve low back pain by reducing stress 2 Fully adjustable and breathable elastic side panels 3 Neoprene back panels for warmth and ultimate comfort 4 Six pillars on the back for extra support 5 Fine stitching along the edges and magic wand for durability 6 of our most popular back supports 7 PP strips in 8 8 Has a pocket to put the cold/hot pad inside INSTANT RELIEF: Lumbar Back Braces work by supporting your spine and surrounding muscles during times of pain and injury. 4 built in steel support stays, provide for maximum lumbar support. Along the two side of spine, do not have positive contact with the vertebrae, focus on protecting the Lumbar vertebrae. Flexible steel stays the waist side the back support from moving up.support the lumbar muscle in the waist to relieve strain and soreness ADJUSTABLE PULLEY SYSTEM: Dual-layered compression belt with velcro fastener, Adjust the back support to the exact position and pressure for your needs. Designed to allow natural movement while providing comfortable support COMFORT YOU DESERVE: Made with breathable mesh fabric designed to be worn for extended use without excess heat buildup,making it comfortable to wear while working or movement. Comes in a black color and can be worn over or beneath your clothing.Detachable, Washable, Breathable, non-Neoprene, non-Elastic knit fabric CHECK SIZING CHART: To make sure our back brace works perfectly for you, be sure to check the sizing chart and choose the proper size in the drop down menu (Do not assume you know your size) DESIGN: It Has a pocket to put the cold/hot pad inside