The Dakine Shuttle 6L Bike Backpack with 2 liter hydration bladder is for short trip and it is ideal for cyclists. Only for the bare essentials: cell phone, wallet, rain jacket, tool and food can be easily accommodated. The sporty Shuttle 6L Pack also has an internal air pump pocket and a fleece-lined eyewear pocket. Also good for cyclists. A signal whistle is integrated on the chest strap.