Life/form™ First Aid ArmLF01005 Train students in the proper techniques used to control severe bleeding: direct pressure, and pressure points. The Life form First Aid Arm provides extremely realistic appearance and function to make your training exercise true to life. Looks and feels like a real arm. Synthetic blood can be made to flow from either the cut on the forearm or from the severed thumb, or from both at the same time. The severed thumb allows training in proper care