Once the snow melts off the alpine, you can finally take aim at the summit ridge scramble as the Gregory Miwok 18 Backpack comfortably keeps your day's supplies snug and handy. The breathable, mesh lined straps and back panel prevent overheating and over sweating, and the BioSync suspension system helps keep the pack anchored as you navigate the granite maze. The 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. The Miwok's BioSync suspension system allows the pack to move with your body and keeps the pack centered on your back. Side compression straps secure the load so it doesn't shift around inside the pack. A hydration tube management system keeps the drinking tube within easy reach so you don't have to divert your attention to take a drink. The dual waist belt pockets and side pockets make it easy to access the things that you need to get to in a hurry, like your camera or a snack. The Gregory Miwok 18 fits a two liter hydration reservoir, enough for a day hike or a few hours on your bike.