3 in 1 Ski jacket for men Indeed, the multilayer system gives possibilities to adapt according to needs and over the seasons. The outer shell features a 3-ply membrane as well as a stretch fabric that has been treated to resist the elements. Both windproof and breathable, it provides maximum comfort while keeping you dry. A helmet compatible provides additional coverage while maintaining good visibility. The quilted coat attaches to the inside of the shell. With its Thinsulate ™ insulation, it provides the necessary warmth to withstand our harsh winters. The underarm openings, both on the shell and on the inner jacket, allow controlled regulation of temperature and ventilation.