Men's Prime Lightweight Short Sleeve Jersey comfort Through a delicate balance of

Through a delicate balance of light weight development

you get 90g of Polartec® Alpha® breathable insulation to keep you warm—all in a casual style that works on and off the bike

With its multiple Unbound victories

Through extensive Computational Fluid Dynamics and Win Tunnel testing

With the new

Men's Prime Lightweight Short Sleeve Jersey comfort Through a delicate balance ofIntroducing our latest innovation in lightweight apparel, the Prime Lightweight Short Sleeve Jersey. 40% lighter than our Prime Jersey, its lighter than an empty 26oz water bottle and the lightest full featured jersey full zipper and three pockets on the planet. Wicking sweat from your body 17% faster than any other jersey we have ever made, Prime Lightweight is the premier jersey for hot days and high mountains. Engineered from ultralight open mesh