The Zephir 17+3 is a hiking backpack designed by the brand Ferrino, ideal for running, cycling, or hiking. Whatever the conditions, your back will remain constantly ventilated, even in hot weather. Indeed, the ""Dry Net System"" and ""Hollow Back System"" ensure a high level of breathability. This is achieved through the use of preformed padding, which you will find on the shoulder straps, the waist belt, and the back panel of the Ferrino backpack. Additionally, you have several storage options in the Zephir 17+3. Besides the main compartment, you will benefit from an inner back pocket, a pocket on the waist belt, and two front pockets. The mesh side pockets are perfect for holding your water bottle and snacks. Even in the dark, the reflective strips on the backpack will ensure you are visible for added safety. Finally, the rain cover of the Zephir 17+3 will keep your belongings dry in case of rain. Fabric: Diamond HD Back with ""Dry Net System"" (DNS), whose breathability is guaranteed by the mesh fabric, while the distribution of the contents and stability during transport are optimized thanks to a flexible steel frame ""Hollow Back System"" back, shoulder straps, and waist belt are highly breathable due to preformed padding combined with ventilation channels and highly breathable mesh fabric Mesh side pockets Safety pocket Two front pockets Pocket on the waist belt Inner back pocket Pocket on shoulder strap Rain cover Two retractable pole holders Side compression straps Chest strap with emergency whistle Compatible with H2 bag hydration system Retractable helmet holder eyelets Reflective strips and logos Rear loop for safety light Volume: 17 + 3 L Dimensions: 43 x 28 x 26 cm Weight: 870 g Ferrino Zephyr 17+3 - Walking backpack