What Our Gearhead(R) Experts Are Saying:"When I'm planning a full-day hike with big elevation and changing weather, the Mira 34 is my pick. The included reservoir is super easy to use, the backpanel breathes well, and the extra space means I never have to leave essentials behind."We pack the Mira 34L Hydration Pack when the hike calls for more miles, more gear, and total confidence in our carry. This hydration-ready pack is built for long days on the trail, offering premium organization, ventilation, and comfort that doesn't cut corners. The included 2. 5L Hydraulics(TM) LT reservoir integrates seamlessly with a magnetic sternum valve, making hydration effortless. A tensioned mesh AirSpeed(TM) backpanel promotes airflow, while refined shoulder strap geometry improves the overall fit and comfort. We stay organized with panel-loading access to the main compartment, a redesigned front pocket, and a stretch front panel that secures overflow layers or bulky gear. Add in dual hipbelt pockets, a raincover, and upgraded fit adjustability, and it's easy to see why the Mira 34L is one of our go-to packs for big trail days.