Scubapro MK25 EVO DIN 300/D420 Diving Regulator System

First Stage, Air balanced flow-through piston first stage design delivers consistent and effortless airflow, regardless of depth, tank pressure, or breathing rate., Patented XTIS (Extended Thermal Insulating System) fully insulates the inner mechanism from the environment, improving cold-water resistance by 30% and delaying ice formation in extreme cold-water conditions without compromising breathing performance., Anti-freeze protection radically increases breathing reliability when diving in the most extreme water temperatures., Two opposing high-pressure ports allow the first stage to be positioned either up or down.