The Kneeguard Chamber is a pre-shaped pad that features a perforated light neoprene/mesh pull-on body for max ventilation. The back of knee features a spandex lined opening for comfort and flexibility. Integrated into this sleeve is an extremely flexible, shock-absorbent and perforated PGF knee pad, which allows for a slimmer profile with no loss of protection and for additional ventilation. We have tagged this ingenious and comprehensive ventilation concept Air Stream Design. Additionally, lateral pads and a pad above the knee provide added protection. To keep the pad in place it was equipped with a layer of non-slip NBR top and non-slip silicone bottom and 360 Velcro strap.