The Helios Jacket is the result of years of design refinement with precision in every detail. Developed to meet the needs of alpine climbing, technical mountaineering and remote alpine camps, the Helios is engineered for high-altitude environments where warmth, protection and mobility are critical.

900+ loft RDS white goose down in a box-walled construction forms the thermal foundation, utilising our PFAS-free Hydronaute XT Mont’s most breathable and weather-resistant shell fabric. The interior features a recycled nylon ripstop lining treated with XReflex™ radiant barrier technology, which reflects body heat to improve thermal retention.

The 4-piece helmet-compatible hood has been shaped through extensive prototyping to maintain vision and mobility while wearing a helmet, even in exposed conditions.

The Helios keeps you warm through bitter wind chills, is tough enough for belays on wind-blasted ridgelines and refined for summit pushes high on technical terrain.

It is the most advanced technical insulated jacket Mont has ever created.