Troy Lee Designs Speed Pro Knee Sleeves – Black X-Small/SmallTroy Lee Designs Speed Pro Knee Sleeves Black X Small Small. When speed and mobility dictate the days attire Speed Pro Knee is a no compromise solution for essential trail protection. The slip on pedal friendly design features a slim D3O insert to absorb impact. Troy Lee Designs Air Channels direct airflow on the back panel and a silicone infused cuff ensures the pads stay in place wherever the trail takes you. D3O Diablo CE Level 1 protection