Halcyon Custom Doubles System pressure checker instead of having an undersuit

instead of having an undersuit sock that finishes at the ankle

The new silicone reduces fogging effect

Made from the highest quality silicone components

The HYDROS wing is designed to stay predominantly submerged even at the surface

designed to keep that awkwardly shaped gear off the ground and to let it drain

Halcyon Custom Doubles System pressure checker instead of having an undersuitStandard Doubles BC System Built for the depths. Ready for what's next. Halcyon helped shape technical diving from the start, beginning with twin cylinders. As pioneers of the backmount systems, we redefined twin set diving with the Evolve: the first circular dual bladder system, built for perfect balance and trim. The Standard Doubles Cylinder System features the Evolve wing in your chosen lift capacity, with an upgrade option to the advanced Legend