Features: Stretchable elbow: These elbow braces for weightlifting are skin friendly to wear because they are soft and have different sizes on the upper and lower cuffs, so you do not need to worry about them being too tight. Nice presents: You can purchase arm support for your kids, helping your kids wear while they're playing sports, or give them to family members and relatives as presents, beautiful and practical. Specifications: Size: about 16 cm/ 6.3 inches in length Color: black Material: nylon, spandex, latex silk Package includes: 1 Pair of elbow sleeves 1 Pair of knee sleeves Warm notes: Please allow a little error on the size due to manual measurement. The color might have a slight difference due to different displays. Please read the size instruction carefully before purchasing.