New model for this year (Do not check this option if this model was listed as new in last year's Gear Guide)The Sonic is a mid-sized, high-performance daypack with ergoACTIV suspension and zippered panel loading access.
-Patent-pending ergoACTIV suspension with OpenAir backpanel
-Zippered panel access
-Soft, breathable 3D mesh on hipbelt and shoulder straps
-Hipbelt stash pocket, side stretch pockets, and front cord compression storage
-Retractable trekking poler/ice axe loop, bike light slot, hydration compatible