Dakine Syncline Hydration Pack – 12L Dark Olive. 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.