【Thickened Protection】Features 2.5cm thick EVA material and a flexible, breathable inner lining for excellent ventilation, reducing injuries and fatigue/wear on the knees when kneeling. 【Two Adjustable Straps】Equipped with two adjustable straps. Made of OK cloth material and Velcro, they are easy to adjust, won't deform or pill when pulled, and are designed to fit the human body's contours, preventing slippage and fitting all types of knees. 【Anti-Slip】The inside of the knee pads has wavy anti-slip bars, increasing the resistance between the pads and the skin, so there's no need to worry about them falling off during daily use. 【Wide Range of Uses】The thickened and durable EVA air cushion provides strong support and protection for the knees against impact. This is an essential protective measure, especially when putting a lot of stress on the knees. Examples include volleyball, skating, dance, baseball, and basketball. 【Size】Knee circumference size: Approximately 20-40cm. 25-49