XPhonew Bike Saddle Bag, 10L Bicycle Seat Pannier Bag Under Packs Tail Pouch Cycling Storage for Outdoor Mountain Road MTB City with Rollable Opening and Reflective Logo

【 10L Big Capacity 】: Can be used a storage bag which stores items such as keys, snacks, mini bike pump, bicycle repai kit, smaller listening devices (iPod Nano, iPod shuffle, etc.), money, and more. 【 RAINPROOF 】: Made of high quality strong water resistant polyster material, provides better waterproof performance to protect your valuables from water, dirt, and dust, easy to clean and durable. 【 Taillight interface & Reflective logo 】: For your safety at night you can install a bicycle backlight on the saddlebag. Under the light, the logo is reflective, if you drive on the road at night, the driver can see you. 【 EASY TO INSTALL 】:Paste straps and buckles are easy for installation and unloading. No mounting tools need, a convenient gear-toting solution that clips instantly to the back of your bike's saddle and seat post,suitable for a variety of bicycles and outdoor cycling, like MTB, mountain bikes, folding bikes and road bikes. 【 Roll-up opening 】: you can easily pick up your thing in the saddle bag, and at the same time you can adjust the package size of the bike bag. Note: Not packed too full, otherwise it can not be well closed.