Feature:1. SELF HEATING: Knee heating sleeve utilizes graphene technology, which generates its own heat to help reduce joint ache and improve circulation of blood.2. WORMWOOD INGREDIENT: Knee heating sleeve is made with Wormwood ingredient to promote joint healing and minimize ache, effective warmth and relieve joint discomfort in cold weather.3. SPORTS KNEE PADS: Warm knee pads sleeves provide joint stability and support, perfect for cycling, biking, motorcycle, snowboarding, skiing, camping, hiking, mountaineering, running and other outdoor sports activities or as daily casual warm clothing.4. 360 DEGREE DEFEND: Heated knee sports sleeve provides 360 degrees of defend that helps keep your knees and legs warm in cold conditions, relieves ache and prevents rheumatoid arthritis osteoarthritis of the knee.5. COMFORTABLE: Knee sleeve is suitable for women men use with knee ache, highly elastic, skin friendly, soft, breathable, stretchy, thick, warm and comfortable to wear all day, keep your knees and legs warm on cold days.Specification:Item Type: Self Heating Knee SleeveMaterial: Graphene Fiber, Latex, Nylon .Package List:2 x Self Heating Knee SleeveNote:Manual measurement, there may be slight errors