The Zulu and Jade replace the ZJ series for 2016, and these streamlined, updated, lightweight packs feature a redesigned, low profile CrossFlo ventilated suspension, improved shoulder harness design, and a new lumbar platform that provides increased comfort in all terrain. Lower profile cargo compartments improve balance while a new front stretch pocket makes it easier to grab and stash gear on the go. Meanwhile, Gregory added new fabrics and reinforcements to increase durability, and they flipped the U zipper main access panel upside down for easier packing and unloading.The Jade 33 has the perfect balance of space and all day comfort that makes it perfect for a wide range of uses in every season. With 33 liters of volume, it can tackle summer nights sleeping under the stars as well as winter days requiring significant amounts of gear and spare layers. A full sized feature set and superior ventilation thanks to CrossFlo suspension mean you'll never feel outgunned by the demands of the outing or the weather on the horizon.