The COEFFICIENT LT QUARTER ZIP PO from Black Diamond is a technical sweatshirt for men, suitable for intense efforts, long approaches, skiing tours lasting several days or mountain running that require extra protection.

This jacket features an insulating, breathable material woven from polyester that provides optimum warmth against the elements; and a Polartec® Power Grid® fleece with gridded interior on the rest of the body, which improves anti-transpiration performance and offers enhanced breathability.

This jacket adds a touch of functionality with the presence of a zipped chest pocket and makes it easy to layer with other jackets without hindrance as it doesn't have a hood.