Used the bag loally for a few months wiht no issues. Then carefully packed two full sets of gear (minus the regs) including 3mm wetsuits and boots into it. (Tight squeeze but you can get that much into it) Jumped on a plane in Australia flew to the US for 1 month diving trip. The bag got a real workout, through several airports, in and out of cars, boats, etc. Still looks new. The wheels really are 4WD and will go over anything.