TENSON MOUNTAIN ANORAK In 1955, Tenson introduced the MOUNTAIN ANORAK, a unisex outdoor jacket that quickly gained popularity. It was notably used during the 1971 Norwegian expedition to the summit of Huagoruncho, which rises over 5,800 meters above sea level in the Chilean Andes. The Tenson MOUNTAIN ANORAK was made of cotton poplin fabric, a durable blend of cotton and polyester with a finish that is wind and water resistant as well as being breathable The version you'll soon be putting on is a tribute to the 1955 Anorak mountain jacket. Of course, it has evolved, the functionality and durability of the fabric, which is a pleasant mixture of cotton and polyester, has been improved. TENSON MOUNTAIN ANORAK