Should you assemble your own trauma kit or purchase one which as been designed and approved by a number of specialist? Near enough everyone can put together a basic first aid kit, but putting a trauma kit together is a second-level skill.
A trauma kit should be compact, light weight and easy to use. Life can be lost in a matter of seconds so having a kit which is convenient to carry on your person is essential. Having top of the range equipment is only part of the equation. The equipment is only as effective as the training. Basic emergency medical training will cover the basics of applying the equipment.