The Mizuno VS1 Kneepad is a volleyball protector with Mizuno Intercool technology. It is a system of channels that ensure the dissipation of excess heat. The Mizuno VS-1 material inside the protector absorbs shock, increases cushioning and resists pressure, especially in the areas where the knee is most stressed during a fall. 64% cotton, 30% elastane, 4% polyester, 2% spandex.