The Cannondale Contain Saddle Bag features Velcro attachment to your rails and seatpost for an easy connection. It is a great way to take extra tools and items on a rider and have them within reach at any moment. This is the medium version which includes nearly 1.5 liters of storage space. A water resistant nylon construction and waterproof zippers make sure all your items stay out of the elements. Reflective features and a light clip help add visibility at night. The Cannondale Contain Saddle Bag is a convenient and durable choice for all your essentials.