Dakine Mens Session Bike Hydration Rincon 8L One Size Backpack - 10000478-RINCON. The men's Session 8L is a lightweight compact hydration pack with dedicated storage for trail essentials. The men's specific fit of this lightweight pack ensures minimal shifting and evenly distributed weight while the breathable air flow back panel and shoulder straps keep you cool out on the trail by minimizing hot spots. The men's Sessions stores 2-liters of vertical hydration plus features a dedicated fleece-lined sunglass pocket internal organizer pockets as well as additional safety features. Stay lightweight and compact out on the trails with the men's Session 8L bike pack. Limited Lifetime Warranty Men's Specific Fit 2L / 70oz 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 Integrated rescue whistle / sternum strap