The Transformer rolling camera bag is combines a trolly bag and built with a backpack inside, makes it easy to customize and maximize the amount of gear you can fit and travel with.This kit is specially designed for out door shooting,easy to carry,it can be transported by ergonomic carrying handles and  a retractable tote handle and built-in wheels, inside bag can be take out as a backpack if need.This trolley case kit adpots waterproof 750D nylon material and YKK zippers and high quality coded lock provide  long service life and smooth operation.