Lightweight, breathable mountain bike jersey The new Flexair Ascent Short Sleeve Jersey takes everything you love about the booming gravel and down-country scene and kicks up the performance and technology to match that energy. Constructed using moisture-wicking fabric, it's got maximum cooling on its mind and is our most aerodynamic and closest-to-body fit - perfect for going as fast as humanly possible on any trail. The carvico rear yoke bumps up the abrasion resistance, while the lightweight bonded hem, neck, and sleeveless arm openings reduce chaffing. The new Ascent Collection blurs the lines between trail, adventure, and pure-XC to deliver premium performance.