Spare Air : Picture 1 regular $207.99

About Spare Air Bottle Only

Having a safety back-up air supply has many advantages over a standard alternate air source. The most obvious is that it is a separate air supply and allows self rescue in an emergency out of air situation. We are taught to stay with our buddy so that in case of an emergency they are right there ready to help us. Next time you make a dive count the times your buddy is further then arms length from you. You will be surprised that they are much further away more often then you may think. Spare-Air gives you a major advantage over an alternate air source when an emergency arises. Having something to breathe from while you are swimming to your buddy, and then, getting their attention while they have their head in a hole watching a lobster can take several breaths or more of air. Tested and approved, Spare Air Bottle is a totally self-contained 3000 psi (200 bars) 3.0 cu. ft. (85 liter), refillable cylinder for the Spare Air backup air system that's small and easy to use. It was designed to get you to the surface in the event of an emergency; yet, it is small enough to not even know you are wearing it! Spare Air is easy to use and maintain, just put it in your mouth and breathe. So give yourself that extra edge of safety with Spare Air. The cylinder measures (L x Dia.) 13.4" x 2.25" (34cm x 5.71cm) and weighs 2.17 lbs (985g) Note: All Spare Air cylinders meet certificated specifications of the US Department of Transportation (DOT) with DOT-3AA specification and Transport Canada Safety and Security (TC) with TC-3AAM specifications. Cylinder is covered by a 12 month limited warranty. Since the cylinder does not come with a valve when shipped the tank will require re-inspection before being filled.

- Easy to travel with!!

- Easy to wear!

- Easy to refill!

- Easy to hand off to a fellow diver in trouble!

Warranty Information

This product has a limited warranty of 12 months.
(800) 648-3483

Spare Air Bottle Only Features

  • Spare Air Bottle Only
  • Fits Spare Air Redundant Alternate Air Source
  • 3000 psi (200 bars) 3.0 cu. ft. (85 liter) of Air
  • Cylinder: Designed to Get-You-to-Surface in Event of an Emergency
  • Dimensions: (L x Dia.) 13.4" x 2.25" (34cm x 5.71cm)
  • Weight: 2.17 lbs (985g)
  • 1 Year Limited Warranty
  • Note: Cylinders Meet Certificated Specifications of the US Department of Transportation (DOT) with DOT-3AA
    Meet Specification of the Transport Canada Safety and Security (TC) with TC-3AAM
  • Cylinder with No Valve: Require Re-Inspection before Being Filled

Spare Air Bottle Only Specifications

3,000 psi (200 bar)
2.25" (5.71cm)
2.17 lbs (985g)
13.4" (34cm)
Weight [with packaging]
3.55 lb
Mfr #
Spare Air Tank Size Chart
  Spare Air 300 Spare Air 300 Nitrox
Max Capacity 3.0 cu ft / 85 liters 3.0 cu ft / 85 liters
Length 13.4" / 34 cm 13.4 " / 34 cm
Diameter 2.25" / 5.71 cm 2.25 " / 5.71 cm
Max Pressure 3000 psi / 200 bar 3000 psi / 200 bar
Weight (full) 2.17 lbs / .985 kg 2.17 lbs / .985 kg
Surface Breaths 57 (Based on 1.6 liters per breath) 57 ( Based on 1.6 liters per breath)
Water Volume 26.62 cu in / .42 liters 26.62 cu in / .42 liters

Bottle Only Customer Reviews

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by PowerReviews
Spare Air Bottle only

(based on 2 reviews)

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Reviewed by 2 customers

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About Me Advanced


  • Easy to Use
  • Lightweight


    Best Uses

    • Cave Diving
    • Night Diving
    • Open Water
    • Wreck Diving

    Comments about Spare Air Bottle only:

    I tested in Bonaire on several dives. I'M 250 lbs at 40 feet It gave me about 2.5 minute of air at 20 feet about 3.25 minutes of air. Could I do a safety stop with it if I needed to questionable. This is great to bail out from shallow depths 60ft or less. It is probably better used to catch up with your dive buddy who is more than a breath or two away and buddy breathe to the surface. This will get you up in an emergency. If your deep I would go to 15 feet and empty the tank there. it may save your life. I use with Zeagle Ranger LTD and the zip pouch accessory made for it. I travel with cheesy clear plastic travel bag because it clearly explains to the TSA what it is and what it is used for. A dial gauge is a must because the pin pops out at 2500 psi and it should be filled full 3000 psi so to give you the best chance possible. Tried in penguin tank at zoo 38F water and it function just fine.

    • Diving Type:
    • Drift Diving, Night Diving, Open Water Diving, Rescue Diving
    • Was this a gift?:
    • No

    Comment on this review

    (2 of 6 customers found this review helpful)


    Good for shallow diving.

    By Bill

    from Laguna Niquel, CA

    About Me Professional

    Verified Reviewer


    • Easy to Use
    • Lightweight


    • Small Capacity

    Best Uses

    • Open Water

    Comments about Spare Air Bottle only:

    This is better than nothing. Beware of getting a false sense of security. Having this does NOT mean you can solo dive. It is NOT good for deep diving, over 80 feet. You need proper training and a pony bottle.

    • Diving Type:
    • Drift Diving, Night Diving, Open Water Diving, Rescue Diving, Wreck Diving
    • Was this a gift?:
    • No
    • Similar:
    • 13 cubic foot pony bottle.

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    Questions & Answers Powered by TurnTo®

    Questions about this item:

    Rick S  What items come with this product?
    Marilyn S  This includes the bottle/tank and top/breathe on demand regulator with built in pressure indicator only. No leash, no bag, no refill adapter, and no dial pressure gauge (SKU: SXDPG). The package that includes the leash bag and refill adapter is SKU: SX27Y. The Nitrox version kit is SKU: SX27N.
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