Trail runners, mountain bikers, and adventure racers looking for a hydration solution that's ultra-light and aerodynamic can rejoice thanks to the Camelbak MenAAAs Racebak Hydration Jersey. Ditch your bulky backpack; it's a dinosaur in comparison to this sleeveless jersey with an integrated hydration bladder and highly-breathable design. Compression fabric gently squeezes the water reservoir to conform to your back as you empty it, so that annoying sloshing sensation is history. Pull a jersey over the Racebak and go hands-free with your hydration while others struggle with straps and packs.