One of the most versatile packs in Osprey's collection, the ingeniously designed Osprey Daylite Plus Backpack is a roomy daypack that attaches to larger Osprey packs on longer adventures. The relatively compact, easy-carrying size lends itself to everything from spirited hikes up towering peaks to sightseeing along tropical coastlines and jungle ruins. It's hydration-compatible, thanks to an internal slip that fits an Osprey Hydraulics reservoir (not included), doubling as a handy spot for a smaller tablet. The main compartment and front-access pocket eagerly swallow a windbreaker, energy bars, small gadgets, and other must-haves. There's a front organizer pocket with integrated clip for securing your keys and daily essentials. Side mesh pockets clutch water bottles for extra hydration capacity. Enhancing its functionality for serious excursions and far-flung travel, the Daylite Plus integrates with the following Osprey packs: Aether/Ariel series, Volt/Viva series, Ace 75, Shuttle Series, Sojourn Series, Farpoint 80, and Porter series.