Honeycomb Shin Guards Football Inserts Student Calf Guards Adult Children Knee Guards Sports Protective Gear XL size: Length 22cm, width 10.5cm. Recommended for adults. Tall one Size L: Length 20cm, width 9.5cm. Recommended for adults over 14 years old M size: Length 18cm, width 9cm. Recommended for children aged 9 to 13 Size S: Length 16cm, width 8cm. Recommended for children aged 4 to 8 EVA material · Sports leg guards Strengthen the muscle tissues in the knee area The outer honeycomb is EA hard plastic The hard shell effectively protects the lower legs and reduces the risk of kicking injuries Inner layer EVA square cushioning material EVA foam disperses impact force, making it more comfortable to wear