Model - KPS (knee protector standard). Made of elastic polyester, using a single layer of EVA foam filler. The shape of the filler has been developed taking into consideration the leg shape change when bending the knee. The knee pads perfectly fit the leg and don't slip down during training. Despite being super lightweight and delicate the KPS Knee Pads provide more safe knee protection than the thickest Foam Rubber knee pads protectors.