The versatile montane men039s atomic jacket is a lightweight mountain shell that is ideal for a variety of sports and activities the pertex shield fabric is waterproof windproof and breathable with a hardwearing nylon face that has a durable water repellent finish for extra elemental defense fitted with articulated arms for increased movement adjustable cuffs and a drawcord hem all combine to create a tailored feeling fit a lightweight shell adept at dealing with wet conditions