Topeak Smartphone Drybag is the perfect fit for your gadget protection against water and mud. It is designed for 4-5" smartphone screen. Even when riding, cyclists need to keep their phones visible and sometimes be in contact with others. Therefore, the window is crystal clear and fully touchscreen compatible, so you can use your phone without taking it out of the bag. Made from sonically welded and seam sealed TPU vinyl, the Smartphone Drybag is safe to keep your phone from rain and mud. Easy and convenient, good material and clear window are the main advantages. The Integrated QuickClick mounting system allows you to attach and remove it instantly. Remember, as this is a dry bag, it is not recommended to expose your phone in a direct sunlight for a long time, as it will increase the phone's temperature.