Sportlite 25 Hiking Backpack Features: Stretch side water bottle pockets. Quick-release upper compression straps. Trekking pole loops w/ upper compression strap capture. Blinky light attachment slot at base of front panel. Adjustable sternum strap with rescue whistle. Panel loading design. Padded hipbelt with one zippered pocket and one open stretch mesh pocket. Direct access external hydration sleeve. Lower V-compression straps keep load stable and secure side pocket contents. Front stretch compression pocket provides quick storage for extra items. Zippered middle compartment is full height with mesh pockets to organize smaller items. Front panel zip pocket with key clip keeps small items handy. Front panel zip pocket with key clip keeps small items handy. Two size unisex fit: S/M fits 15-19" torso, M/L fits 18-22" torso.