Less is More with the Prism 2 Back Mounted Counterlungs

Divers are often looking for new ways to reduce drag and improve streamlining, and now they can with the new PRISM 2 Back Mounted Counterlungs from Hollis Rebreathers! Our new BMCL design allows divers to improve streamlining with less drag and better horizontal trim while leaving the chest free for attachment of additional tanks and accessories. The new BMCLs meet the demand for an attractive BMCL replacement thanks to features like a cleaner hose routing, better water trapping and reverse compatibility for existing PRISM 2 users.

“The market has shifted to Back Mounted Counterlung designs, and we’ve met that demand,” said Hollis Rebreathers Brand Manager Nick Hollis. “More overhead and technical divers prefer the BMCL configuration over the traditional and bulkier Front Mounted Counterlung design. Less is more with the new Hollis PRISM 2 BMCLs.”


  • Clutter-free chest area
  • Streamlined diver profile with reduced drag
  • More space to clip on and retrieve extra items
  • Better horizontal trim
  • Excellent breathing characteristics in all typical diving positions

The Hollis PRISM 2 Rebreather is incredibly reliable, user friendly and easy to breath. Now, rebreather divers benefit from the modular BMCL design that fits their diving style.

Learn more about the Prism 2

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