Hitting the trail on a hot day? Let the Marmot Garmsal Backpacks Airflow frame system keep you cool by channeling air across your back. In addition to your own personal air conditioning, this Marmot pack also provides a place to stash your hydration system so you dont go thirsty. The Garmsal Backpacks 2100cu inch main compartment holds just the right amount of gear for a day at the crags or on the trail. A lid pocket, large front pocket, two side mesh pockets, and two waist-belt pockets keep the smaller stuff well organized and accessible.