The Dakine Session 8L Backpack pairs a 2L Hydrapak® reservoir with a Phaser bite valve for quick hydration on the move. At just 1.1 lbs and built with 100% recycled polyester, the Dakine pack balances low weight with durability, plus smart details like a fleece-lined pocket and integrated rescue whistle. Key Features Volume: 8L Hydration Capacity: 2L / 70 oz Weight: 1.1 lbs / 0.50 kg Dimensions: 18.50 x 8.66 x 7.87 in Hydration System: Hydrapak® reservoir with Phaser bite valve for efficient on-bike drinking Airflow Backpanel: Breathable back panel and shoulder straps help manage heat during rides Storage Organization: Internal organizer pockets, front pocket, and side pockets for gear separation Comfort Fit: Sternum strap with integrated rescue whistle for secure and adjustable carry Material: 100% recycled polyester outer for durability and reduced environmental impact Visibility & Safety: Reflective zipper pulls and safety light attachment point for low-light riding