The Halcyon Secure Harness provides an infinitely adjustable fit, eliminating the uncomfortable movement found in conventional “jacket” buoyancy compensators. This perfectly tailored fit means that divers of all sizes can enjoy a custom diving configuration that supports unparalleled stability and diving comfort. Moreover, this unique system is easily convertible, allowing one to adjust buoyancy or quickly switch from singles to doubles. Regardless of your future aspirations, this flexibility means your diving system can grow with you. From your first open-water dive to your 100th deep dive, Halcyon is with you all the way.