Our elbow sleeve is constructed with polyester materials, it helps protect your elbows from bumps, bruises and friction burns. Meanwhile, it will not restrict your elbow's movement and your overall mobility when your doing exercises or sports. The protective elbow sleeve is perfect for badminton, basketball, football, volleyball, baseball, cricket, weightlifting, Yoga Pilates, etc. Feature - ColorBlack - Material: Polyester. - Size: YS: 34cm(Length), 25cm(Upper circumference), 17.5cm(Lower circumference),Perfect for 100-120cm(Height),13-20kg(Weight), 5-6 Years Old. : 37cm(Length), 27.5cm(Upper circumference), 20cm(Lower circumference),Perfect for 120-130cm(Height),18-25kg(Weight), 7-8 Years Old. : 40cm(Length), 30cm(Upper circumference), 22.5cm(Lower circumference), Perfect for 130-140cm(Height), 23-30kg(Weight), 9-10Years Old. : 41.5cm(Length), 32.5cm(Upper circumference), 25cm(Lower circumference), Perfect for 140-150cm(Height), 28-35kg(Weight), 10-12 Years Old. - Unisex available, Provides effective support and safety for twists. - Ergonomic design, are consist of many small pieces, it could to wrap kid's elbow and arm. - Offers sturdiness and stability to kid’s elbow with a snug fit, not only it reduces kid’s elbow joint symptoms and swelling, but also it protects kids from hurt in sports. - Lightweight material wicks sweat nicely, keeps you dry and comfortable even with longer use. - Fashion design and style, made with heavy duty impact resistant to protect your elbow when basketball,skating, biking, riding,dancing ,golf,fitness and any other sports. Package list: 2 x pair of Arm