This an updated version of our popular Crest Thermo Trouser. New details and spacious fitting. The trouser is filled with a new type of insulation. THERMAL BOOSTER is a material that changes after temperature. The colder it gets, the warmer the trouser will feel. This trouser has COVERTEX 100 membrane, 2-layer construction. Two upper front pockets and two pockets. Crest Thermo also has two back pockets. Waist is raised in the back and has elastic parts for good fitting.