Ideal for completing the southern section of the GR20 or any other trek in high temperatures, the Atmos AG 50 by Osprey is packed with innovations designed to enhance comfort for hikers. It features an AG AntiGravity™ back panel, which includes the world's most ventilated hip belt. This 50L hiking backpack is not only pleasant to wear in hot weather, but it is also extremely versatile and suitable for all your long hikes. The ExoForm™ Biostretch™ harness and Fit-on-the-Fly™ hip belt ensure optimal load support, even for heavy loads. Materials: nylon Waterproof cover with PFC/PFAS-free DWR coating and bluesign certified materials Side zippered openings on both sides Top lid with attachment points Reinforced front stash pocket Two large side water bottle pockets Two upper and lower side compression straps Two zippered hip belt pockets Two ice axe loops with upper compression strap Zippered sleeping bag compartment with removable divider Removable sleeping pad straps Internal hydration sleeve with center back exit port Stow-on-the-Go trekking pole attachment system Dimensions: 86 x 38 x 31 cm Weight: 2,100 g Osprey Atmos AG 50 - Hiking backpack - Men's