Product details:

Equipped with its own reservoir, the Dyna 1. 5L Backpack delivers a low-profile fit and nimble performance without compromising the hydration and storage space needed for our long trail or road runs. A combination of zippered and drop-in pockets keep snacks, gels, and valuables organized, while back bungee storage stashes extra layers or hats.Hydraulics 1.5L LT run-specific reservoir included in the dedicated sleeve with direct-zip access and hose path for easy loading
Two extra-large stretch mesh soft flask harness pockets and two lower stretch mesh harness pockets keep essentials accessible (flasks not included)
Vertical zippered harness slash pocket for valuables or phone
Padded mesh straps and snap-in adjustable/removable dual chest straps provide comfort and stability
Two open stretch mesh side panel pockets and a stretch mesh front pocket for quickly stashing extra gear
Tuckaway safety whistle for safety on any trail
Trekking pole/ice axe attachment and front panel bungee storage for a streamlined carry