With a well-ventilated back panel to keep you cool and a superior suspension, the Gregory Z22 daypack makes going fast and ultralight a cinch Jet Stream Direct Transfer Suspension puts the weight of the pack directly on the specially designed frame, increasing support as the load increases. Zippered, hydration-compatible main compartment sports a sleeve with hanger for your reservoir sold separately. Front pocket expands, letting you stash bulky gear and keep it easily accessible. MP3/snack pocket stores your portable music or energy gels. Dual pole-attachment points let you strap on additional gear. Flexible Auto-Fit harness matches your shoulder angles perforated foam is covered with 3-D mesh to vent and wick away moisture. Constructed from 210-denier, high-tenacity ripstop nylon and nylon twill for tear strength and abrasion resistance. Mesh hipbelt pockets are ideal for stashing gels, lip balm, sunscreen or a mini-tool. 2 stretchy side pockets keep water bottles and snacks within easy reach. Closeout.