Engineered for peak performance in hot and humid conditions, the Twenty One Factory Air Jersey in Blue Night for Men is the lightest jersey in the lineup—an evolution of the Aero Light, now reimagined for daily training and high-level racing. Built with ultra-stretch, quick-drying fabric and a semi-open structure that maximizes airflow, it delivers the perfect balance of breathability, comfort, and aerodynamic performance for long, demanding rides.

• Ultra-lightweight and highly breathable construction
• High-stretch fabric with fast moisture-wicking properties
• UPF 50+ sun protection
• Long-cut sleeves for improved aerodynamics
• Bonded hems and seamless waistband for friction-free comfort
• Minimalist rear pockets for reduced weight and drag
• Lockable front zipper for one-handed use
• Perfect for riding on hot days
• Suitable for 64º-95ºF / 18º-35ºC