From the manufacturer

Base layer shorts with built in chamois.

The Tecbase Liner Shorts are an essential piece of riding gear. Comfort comes first with silicone thigh grippers to prevent the shorts from sneaking up your legs during a ride, plus a dual-density EVO chamois provides excellent comfort on any ride. The lightweight 4-way stretch mesh keeps the air moving, and flatlock seams ensure all-day comfort on the toughest rides. Designed to integrate with Fox shorts.

Features

• Dual-density chamois for increased comfort in the saddle
  
  
• Silicone thigh grippers prevent ride-up
  
  
• Lightweight 4-way stretch mesh provides all-day comfort

Specifications

• Dual-density EVO chamois for increased comfort in the saddle
  
  
• Silicone thigh grippers prevent ride-up
  
  
• Lightweight 4-way stretch mesh provides all-day comfort
  
  
• Flat-locked seams are low-profile for extra comfort
  
  
• Inseam: 8.25"