Spare Air 300PK Package Prince Harry's Ridicule Shows No Signs of Ending Newsweek Prince Harry's Book 'Spare' Is Finally Here With All The Royal Tea Spare Parts Management PowerPoint Presentation Slides PPT Template. The Spare Air 300PK Package offers a compact, emergency air solution for recreational divers. With a standard capacity of 3. 0 cu ft of air, it is designed to help you reach the surface in an emergency while staying unobtrusive during a dive. Its small, low profile form makes it easy to wear as part of your scuba gear without distraction. Included in the package are the Spare Air, a Holster, a Safety Leash, and a Refill Adapter, providing a complete, ready to use system for your diving kit. The system weighs just over 2 lbs, making it one of the lightest emergency air options available for divers. It can be refilled in seconds from any full SCUBA tank, ensuring you have a reliable backup air source on the water. For visibility and compatibility, note that a Pressure Indicator (Dial Gauge) is sold separately. This Spare Air package is suitable for scuba and diving applications as an additional gear option in your open water kit.