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The ISC Spare Air is the smallest redundant scuba system available with enough air to get you to the surface in an out-of-air emergency. The patented Spare Air should be a standard piece of scuba diving equipment for the safety-minded diver.


  • 3.0 cubic feet of air (57 surface breaths)
  • Easily refills from your own scuba tank with included refill adapter (patented)
  • Easily attaches to your BC with included holster and safety leash
  • Small, hands-free, nearly neutrally buoyant
  • Breathe on demand regulator - No complicated instructions
  • Completely redundant back-up miniature scuba system
  • Faster than buddy breathing and easier than an octopus

Spare Air 300

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