?The Water Bottle Holder and Adapter for Bike Bicycle are useful for bikes which have no holder or inadequate for a frame holder£¬ it is convenient to fetch drink from the set. It comes with a sturdy structure to prevent from deformation damage. And it is quite affordable and always available. From now on£¬ it guarantees your safety and convenience in the daily life.                                    Features            Complete made by carbon fibres£¬ security firm ultra light structure£¬ convenient kettle take outApply to highway car and mountain bike£¬More than one hole inside installation choiceIt takes nylon and short fibers engineering plastic£¬make it durable and flexible elastic                                                            Specifications            Material    Carbon fiber    <br>Size    15 x 7cm(LxD)    <br>Weight    36g    <br>                                                            Package Includes            1 x Carbon Fiber Kettle Frame