A lightweight 8-liter bike hydration backpack. A sturdy staple, the Session 8L bike hydration pack is a minimal, yet fully featured pack combining the cooling comfort of a breathable back panel with airy shoulder straps. An updated recycled poly provides a rugged and sustainable outer on this narrow, lightweight pack with two liters of vertical hydration. The pack provides plenty of storage including an organized front pocket, a fleece-lined pocket for sunglasses or phone, additional side pockets, plus external attachment straps. The Session is a do-it-all bike pack to keep you pedaling all day. BODY: 100% RECYCLED POLYESTER LINING: 100% RECYCLED POLYESTER 18.50 x 8.66 x 7.87in [ 47 x 22 x 20cm ] 1.1 lbs [ .50kg ] Features 2L / 70 oz Hydrapak® reservoir Phaser bite valve Breathable air flow backpanel and shoulder straps External attachment straps Fleece-lined sunglass pocket Internal organizer pockets Safety light attachment Reflective zipper pulls and safety light attachment Integrated rescue whistle/sternum strap 100% recycled polyester