Castelli Core Seamless Short-Sleeve Base Layer for Men. 

A lightweight, breathable base layer designed for comfort and moisture management on cool-weather rides. The seamless construction provides a close, flexible fit that moves with your body, while technical moisture-wicking fabric helps keep you dry. A wide neck opening sits comfortably beneath cycling jerseys.

• Weight: 141 g
• Fit: Regular
• Temperature Range: 46°F–68°F (8°C–20°C)
• Seasons: Spring, Fall, Winter (layered)
  
• The StinkLightweight, short-sleeve cycling base layer
• Moisture-wicking fabric keeps skin dry and comfortable
• Seamless construction enhances stretch and reduces chafing
• Close-to-body fit minimizes bulk beneath jerseys
• Wide neck opening accommodates low-collar jerseys
• Ideal for layering during cool-weather rides