From the manufacturer

Lightweight, 4-way stretch mountain bike shorts with airflow zones.

The ultimate in speed and performance, Flexair Lined Shorts are incredibly lightweight and comfortable. Constructed using 4-way stretch fabric, they rapidly wick perspiration and flex to give you a feeling of freedom unlike any mountain bike short you’ve ever worn. Strategically placed laser-cut perforations increase comfort further by providing exceptional breathability, while the Durable Water Repellent (DWR) finish sheds moisture, dirt, and debris as you ride. If you’re looking for reliable, all-day riding comfort, look no further than a pair of Flexair mountain bike shorts.

Features

• Includes a removable liner short with dual density chamois
  
  
• 4-way stretch fabric with engineered airflow zones for comfort
  
  
• Ultra-light, moisture-wicking material for maximum cooling
  
  
• DWR finish sheds moisture, dirt, and debris

Specifications

• Includes a removable liner short with dual density COMP chamois for maximum comfort in the saddle
  
  
• Lightweight 4-way stretch fabric with engineered airflow zones for all-day riding comfort
  
  
• Proven race ratchet closure provides secure fit and quick on-the-fly adjustments
  
  
• Secure zip hand pockets
  
  
• Bonded hem with over-taping detail is low-profile and reduces chaffing
  
  
• TruDri® fabrics move sweat away from body to keep you dry
  
  
• DWR finish sheds moisture, dirt, and debris
  
  
• Laser cut perforations increase airflow
  
  
• 72% polyamide nylon, 19% polyester, 9% elastane
  
  
• Liner: 87% polyester, 13% elastane