Material: Skin-friendly, breathable, flexible, windproof, thick, cozy, thermal, keep you waist, abdominal and back warm and comfortable in cold weatherProvide gentle support for a weak, injured and arthritic back. Helps keep affected area warm after injury and during recovery. Perfect for wearing under clothes to relieve the backache painUtility in a variety of sports protection, perfect for outdoor activities in winter and cold autumn, such as Cycling, Biking, Motorcycle, Snowboarding, Snowmobile, Skiing, Camping, Hiking, Climbing, Hunting, Running and days outUnisex Adults medical grade rheumatic back pain brace lumbar sciatica belt lumbar kidney warmer support. Suit for people sedentary/long standing in office, stomach cold, back pain and work outside in winter. A great Christmas/New Year/Holiday/Festival/Birthday gift for yourself, friends and familiesSize / Belt Width / Belt Length S /18cm /80cm M /20cm /90cm L /20cm /100cmXL /20cm /110cm