Weight : 1.56kgVolume : 35+10 LitresBack Length : 19-21" / 48-53cm Pick up the pace on hot summer trails with the versatile and breathable AirZone Pro 35:45 ventilated hiking backpack. Built for lightweight trekking and four-season hillwalking, the AirZone Pro 35:45 features 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 35:45 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 10 litres of expandable capacity, this light mid-volume hiking pack delivers a cool, comfortable carry out on the trail. 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  35+10 litres  Weight: 1.56kg / 3lb 7oz  Dimensions: 70 (Min 58) x 34 x 29cm Please note: this rucksack is a Lowe Alpine standard fit and tends to fit the frame of a man better than that of a woman and distributes the weight differently to female-specific rucksacks. Narrow Dimension (ND) rucksacks are made specifically to suit the different frame of women and are available in a range of sizes.