BLUETOP Bike Bag, Pannier Rack Tube Bag 2 in 1 Saddle Bag for Mountain Road Outdoor Sport Cycling MATERIAL AND SIZE: Material: 600D polyester;Size:5.9''L*2.4''W*4.5''H(L15xW6xH11.5cm);Capacity:2L EASY TO INSTALL: with Velcro stirp to fix, very convenient and quick. Both sides of the bags have reflective tapes, be safer when driving at night LARGE SPACE: ideal for the safe storage of important accessories while you are cycling, such as your wallet, mobile phone, watch etc; Suitable for most kinds of bicycles, such as fast riding, road bike and mountain bike DURABLE AND EXQUISITE: Two bags are stitched with polyester fabric, which is difficult to be broken; Double bags, able to take more items A GREAT GIFT: It's the best choice for your friends,lovers and families as the Thanksgiving Day Christmas Valentine gift