Weight : 1.54kgVolume : 33+7 LitresBack Length : 17-19" / 43-48cm Built for hikers, hill walkers and lightweight trekking, the AirZone Pro ND33:40 women’s hiking backpack delivers ventilation and comfort, whatever the terrain. Push on through tough trails with the women’s fit AirZone Pro ND33:40, featuring our award-winning, fully adjustable AirZone+ carry system, with patented FormKnit™ technology for all-day comfort and breathability. With its next-generation SpiderPlate adjustable bungee system, side mesh pockets and multiple compression straps, there’s plenty of scope to carry an external jacket, roll mat, walking poles and axe. The AirZone Pro ND33:40 has a zipped side entry which delivers direct access to the main compartment without dirtying the carry system. Additional features include an integrated rain cover, plus a large-capacity top pocket which provides quick access to essentials. With seven litres of expandable lid volume, the AirZone Pro ND33:40 is the perfect mid-volume women’s hiking backpack for lightweight trekking and four-season hillwalking. The all-new AirZone+ carry system features our patented FormKnit™ technology to maximise breathability, improve dryness and reduce weight. Based around a one-piece knitted back panel, with ventilation body-mapped to the high-sweat zones of your back, our award-winning AirZone+ carry system delivers unparalleled comfort and breathability. Its seamless FormKnit™ technology, integrated hip belt and lumbar pad work together to deliver a supple, highly adjustable custom fit for all-day comfort in hot conditions and challenging terrain. Features:  HeadLocker axe attachment system  Secure TipGripper walking pole attachments  Large stretch mesh side pockets  Updated SpiderPlate bungee system with integrated adjuster  Airzone +™  For day hiking  Zipped side pocket  Forward pull hipbelt adjustment with zipped hipbelt pockets  Internally adjustable back-length  Featuring FormKnit™ technology  Zipped side entry allows main body access while keeping carry system clean  Rain cover  Breathable harness and hipbelt  33+7 litres  Weight: 1.54kg / 3lb 6oz  Dimensions: 69 (Min 56) x 33 x 29cm Please note: this rucksack is a Narrow Dimension (ND) rucksack and tends to fit the frame of a woman better than that of a man and distributed the weight differently to a standard-fit rucksack. The standard rucksack better suits the frame of men and is available in a range of sizes.