The AEROcase is a highly versatile emergency bag that can serve a variety of purposes, whether it finds use with first responders, ambulances and other emergency rescue services, or in doctors offices and clinics. This bag can be carried by its handle or by the use of optionally provided shoulder straps. The interior of the bag is highly structured and compartmentalized, enabling its contents to be well organized and therefore easy to locate and access. Compartmentalization is accomplished through the use of removable walls and strips and straps are included to secure bottles or containers. The bag opens up into a full 180 degree configuration. The individual compartments in the bag can easily be secured and are lockable. A loop and hook strap ensures safe transportation O2 bottles.