Osprey Packs Daylite Daypack Large panel loading main compartment provides accessibility to inside contents Dual stretch mesh side pockets provide additional storage options The front zippered pocket with mesh organizer and key clip offers organizations for smaller items The multi-function interior sleeve can be used for either a Osprey Hydraulics reservoir or tablet. Adjustable sternum strap with whistle. Not applicable for Daylite Sling Mesh-covered die-cut foam backpanel provides both comfort and ventilation