Spare Air – the original mini scuba tank for divers and more. spare air, submersible systems, scuba diving equipment manufacturer, mini scuba tank, diving safety, rescue equipment, emergency breathing system, run out of air, secondary air source, octopus, HEED, Helicopter Emergency Egress Device, personal protective device, drown, scorkl, scopel SPARE AIR is the smallest redundant SCUBA system available yet is packed with 3000 psi to provide you with enough air to get you to the surface in an emergency from recreational depths. It is so small and compact anybody can carry one diving. Take safety into your own hands - buy a SPARE AIR!