Once most of the snow retreats from the alpine, you can finally take aim at the summit and scramble up with the Gregory Miwok 18 Backpack. The breathable, mesh-lined shoulder straps and back panel prevent overheating and serious sweating, and the BioSync ATS suspension system helps keep the pack flexible and stable as you navigate the granite maze. A large main compartment and zipper-accessed hydration sleeve provide space for an extra layer, food, water, and other small items you may need along the trail.A swinging load can knock you off balance, so Gregory included side compression straps to prevent gear from shifting around inside the Miwok. A hydration management system keeps the drinking tube within easy reach, and the dual waist belt with side pockets make it easy to access the things that you need to get to in a hurry. The Gregory Miwok 18 fits a two liter hydration reservoir, enough for a day hike or a few hours on your bike, and it has convenient spots to store a helmet and secure a bike light if you're leaving the trails behind for an urban ride.