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. FEATURES: 2L / 70oz Hydrapak® reservoir Phaser bite valve Breathable Air Flow backpanel and shoulder straps External attachment straps Fleece lined sunglass pocket Safety light attachment Integrated rescue whistle/sternum strap 1.2 lbs. 17 x 7 x 3" 488 cubic inches 100% 450D ripstop recycled polyester (rPET) exterior