Mountainsmith Hiker Recycled-Fabric Day Pack Zippered access into main compartment. Air mesh foam panel. Front panel pocket. Mesh pockets accommodate 22oz water bottle. Safety whistle, removable waistbelt that tucks away, organizational sleeve and elastic rigging Fleece lined eyewear pocket and two compression straps. Internal organizer pockets. Trekking mounts. Dual density foam shoulder straps. Elastic sternum strap and bite valve catch. Air mesh foam back panel. Pivoting waistbelt.