When you're on your bike, you don't' want to have to worry about whether or not your items are secure. The Outdoor Products Cycler Day Pack is the perfect bag for cycling commuters. Lightweight construction and design let this pack roll up for easy storage. It's hydration bladder compatible (reservoir not included), with a foam padded back and adjustable waist belt for a comfortable ride. This pack also comes equipped with a front access pocket for keeping your important stuff secure yet close.