From the manufacturer

As comfortable as it is protective, Stage Pro is the knee’s best friend when the trail becomes daunting. The slim, contoured design is reinforced with flexible D3O® CE Level 2 impact absorbing protection, seamlessly conforming to the knee while Troy Lee Designs Air Channels promote airflow.

Features

• D3O® Diablo™ EN 1621-1:2012 CE Level 2 protection
  
  
• Technical upper and lower cuff
  
  
• Durable 260gsm lycra body
  
  
• Slim & lightweight contoured fit
  
  
• Troy Lee Designs Air Channels on back panel
  
  
• Troy Lee Designs Pad Anchor system
  
  
• Reflective logo details