Size S-- Waist circumference: 65-80 cm / 25.6-31.5 inch M-- Waist circumference: 80-100 cm / 31.5-39.3 inch L-- Waist circumference: 90-110 cm / 36.4-43.3 inch XL-- Waist circumference: 100-120 cm / 39.3-47.2 inch XXL-- Waist circumference: 120-140 cm / 47.2-55.1 inch Standing in a relaxed position, measure waist at the level of navel (belly button). Do not assume you know your size. Do not select by pants size. Product Description Color: Black Material: Fabric Size: S, M, L, XL, XXL (Please Select) Suit for: Men, Women, Adults, Male, Female Applicable Scene: Works, Running, Climbing, Golf, Basketball, Football, Soccer, Volleyball, Tennis, Badminton, Mountaineering, Hiking, Cycling, Biking, Weight Lifting, Yoga, Sports Fitness and so on Please allow 1-2cm measuring deviation due to manual measurement Due to various monitors and lighting conditions, colors may be slightly different from listed photos. Lumbar Back Brace 1. Helps relieve lower back pain while providing support to strains, sprained, and aching backs. 2. Provides support to weak, sore or injured backs. 3. Provides protective support to the back. 4. Reduces unwanted movement in the back. 5. Beneath Clothing Wearable - Suit you tight with soft fabric 6. Breathing Fabric - It's has a soft, airy and caressing touch thanks to the breathing fabric 7. Double Stretching Strength - Keeps you supported as much as you need About this item 1. Instant Back Pain Relief - Our back brace is the top selling lower back pain relief products and recommended choice of physical therapists, chiropractors, and back pain professionals around the world. It gives you immediate pain relief from your sciatica, lower back, upper back, herniated disc, and back muscle pain. 2. 3d Lumbar Cushion Pad - Featuring specially designed contours, our lumbar support pad fits closely to your back, providing optimal support to your lumbar region for maximum back pain relief. It fits organically to relieve lower back pressure and provide extra support for anyone who work, stand, or sit for long hours experience back pain. 3. Orthopedic Design to Improve Posture - Our back support belt equipped with 4 aluminum vertical support stays along with 2 steel springs which provide adequate support in the lower back areas to ensure proper posture and spine alignment during daily workouts, heavy lifting, gardening, or just doing housework. 4. Superior Compression, Prevent Back Injuries - Our back brace incorporates two adjustable double-pull Nylon buckle tension to provide targeted support and deliver superior compression and stabilization from your L1 through S1 vertebrae, reducing lower back motion and prevent back injuries. 5. FORGET ABOUT PAIN - Our Back Brace gives you immediate lasting relief from a herniated disc, sciatica, back pain, sore muscles and other back conditions. Wear it when you walk, bend or stretch. 6. PREVENT BACK INJURIES - 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, herniated disk, sciatica, scoliosis etc when wearing the back belt. 7. WELL WEAR UNDER CLOTHES - 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. 8. Back Braces for Lower Back Pain Relief: It can relieve all kinds of discomfort brought about by life, so that life or work will not be bothered by waist discomfor. 9. Back Brace for Back Pain,Herniated Disc, Sciatica, Scoliosis, Strain: It can effectively relieve and protect various discomfort of spine, spinal column or lumbar disc herniation. Packing List 1 Piece * Waist Support Belt