Kapoo Bicycle Frame Bag WIDE APPLICATION: Can be adapted to variety types of bicycles, such as mountain bike, and suitable for packing cell phones, money, key or ID card. COMPACT BUT CAPACIOUS: This bike seat pack has a large room to hold an item as long as 7.87". Width 1.96"(front)-3.5"(back). AERODYNAMIC SHAPE: Kapoo bike saddle bag with well designed shape to reduce air resistance to the minimum, for your high speed cycling experience. INSTALLATION IN SECONDS: One velcro strap and two snap-on buckles allow you to install it onto your bike firmly and easily. Kapoo bike pouch is made of high-end polyester and PU leather, easy cleaning and durable. All Bike Saddle Bags from Kapoo enjoy 1 Year Warranty. 1 Year no-hassle warranty provides easy lifetime protection for your Bike Bag.