Introducing the new VaporAir Lite Hydration Vests. These vests pack the best form and function of the originals, and feature our new "Set it and Perfect it" adjustable fit system. Innovative lower lumbar hook and loop panels allow you to set the back panel to your shape and micro-adjustment straps are there to perfect the fit. Made with highly breathable mesh, and chafe-free binding for maximum comfort, plus plenty of pockets for your essentials and 2L Bladder.