Ocean Reef Neptune III BackpackNeptune III Backpack Neptune III Backpack, a backpack for Scuba Divers, designed by Scuba Divers. This backpack has dozens of features that will challenge your creativity and satisfy your need for an intelligent solution when traveling with your OCEAN REEF Full Face Mask. Versatility, adaptability, functionality, customization and badass design are the key words to this new, exciting product from OCEAN REEF When engineering our newest IDM the Neptune