When you are traveling or riding bicycles outdoors, you maybe need a bag for you to store your mobilephone and other things. With this bag, you can put your things into this bag to store easily. It is made of fine material, which is waterproof and not easy to deform. Come on and try it, it will not let you down.     Features:  0.4L Capacity: The 0.4L capacity design can store some of your small tools during riding, such as stopwatches, tail lights, etc.  Waterproof Design: The bag is made of PU+EVA material and uses waterproof zippers, which can effectively protects your items from rain.  Safer Riding: This bicycle saddle bag has a safety tail light rings on the back, you can hangs the tail light for safer night riding. (Tail lights are NOT included)  Easy to Install: Its installation and disassembly process is very simple, and the installation can be completed without the use of other auxiliary tools such as wrenches.  With the professional shape protects design, it will not impede your legs during riding.    Specifications:  Material: PU+EVA+nylon  Color: black, yellow, grey (optional)  Capacity: 0.4L  Suitable for: dual track seats cushion  Bag size: 130 * 70 * 70mm / 5.1 * 2.8 * 2.8inch  Package size: 135 * 95 * 65mm / 5.3 * 3.7 * 2.6inch  Package weight: 110g / 3.9ounce    Packing list:  1 * Bag