Since its introduction, the Tempest series has been on very popular. Its carrying comfort is excellent thanks to its supple but strong structure. . It also boasts a practical kangaroo pocket in its front panel, for overpacking. Tempest packs adapt to your body and movements for superb comfort. The manufacturer's recommended cargo amount for this pack is 4.5 to 13.6 kg. - Fabrics: 100 and 210 denier Nylon made 100% of recycled material, bluesign approved - AirScape back panel - HDPE frame plate gives the pack jsut the right amount of support - Two stretchy bottle pockets - Two zippered waist pockets - A dedicated phone pocket with brushed inside - Stow-on-the-go hiking pole holders: use them without the need to stop - Hydration bag compatible - Attachment for a led light - The small item pocket has a key clip - Lid Lock bicycle helmet holder This is a PFC-free product.