Mountain Hardwear created the PCT 55L backpack for better load control during long overnight stays and weekend excursions.. Thanks to the innovative Hoverbelt hip belt PCT follows the natural movements of our body and actively transfers weight there where it should be, reducing fatigue and creating a feeling It's like he's practically floating there. This works in unison with the trampoline's back panel and lightweight aluminum frame providing better support when maneuvering over uneven rocks and uneven brush. And if this tear-stained area accidentally catches part of our backpack we don't have to worry too much. The base and body are made of high density fabric that can stand up to daily challenges on the trail.