From the manufacturer

When speed and mobility dictate the day’s 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.

Features

• D3O® Diablo™ EN 1621-1:2012 CE Level 1 protection
  
  
• Silicone infused upper and lower cuff
  
  
• Durable 260gsm lycra body
  
  
• Slim & lightweight contoured fit
  
  
• Troy Lee Designs Air Channels on back panel
  
  
• Reflective logo details