There are many different types of bags that can be used for bob strollers. Some bags are designed specifically for bob strollers, while others are more general-purpose. Some bags are made from durable materials, while others are made from lightweight materials. The most important factor when choosing a bag for a bob stroller is the size and shape of the bag. The bag should be able to fit the stroller comfortably and have a variety of pockets and compartments.