The MoTowWhee kit bag is the perfect size to stuff with your TowWhee and accessories down to a nice small size. Have it with you all the time in case you need it. It is soft enough to squish in different shapes to put in the bottom of your backpack or inside a frame/fender pack. The bag itself is superlight, less than 1 oz, and filled with a TowWhee and accessories packs to around 10oz depending on what you put in it. Filled it is about 7” tall x 4.5” across.