Safe, than sorry..

Imagine yourself skydiving, you are soaring through the air and enjoying the scenery, catching every little detail possible. You go to pull your main chute (canopy) as you realize your altitude levels are reaching ground zero quickly, and it fails.. every legal parachute in circulation is required to have a backup chute in case of failure. Now, refer to diving in water, your oxygen line gets cut, tangled, or anyway damaged; the trusty Spare Air 3000 is at your side ready to use for any situation. It is not a requirement for you to have this product on you at all times, but it will be better for you to be thankful, than regretful.