The first picture is a product picture, the other pictures are sample displays Note: The actual packaging box may be different from the one shown in the picture This product can support your thighs and calves, effectively reducing the pressure on your knees.Use breathable mesh fabric, non-slip fabric, comfortable to wear. Features: Each mat can support up to 20 kilograms of weight. Will help you perform your daily tasks more efficiently and comfortably. Strong spring force, can support your thighs and calves, effectively reduce the pressure on the knee. Breathable mesh fabric, non-slip fabric, comfortable to wear. It can be wrapped directly over bare knees or pants. Specifications: Item type: Knee Pads Material: APS+Alloy spring Color: Blue Quantity: 1PC, 2PCS(optional) Knee pad size: Free size Package weight: 1PC: 260g/9.17ounces                 2PCS: 480g/1.05pounds Package size: 1PC: 150*100*30mm/5.9*3.93*1.18inches               2PCS: 310*175*45mm/12.2*6.88*1.77inches  Package list: 2 * Knee pad