Engineered for mountainous environments where conditions are ever-changing. Montane's range of men's waterproof jackets and clothing blends lightweight construction and world leading, lightweight, waterproof breathable fabrics such as GORE-TEX® and PERTEX® for uncompromising functionality and comfort. The all new men's Atomic Jacket is constructed from lightweight waterproof 40 denier PERTEX® Shield fabric with a dry touch back. How do I wash & care for my new waterproof jacket? See our Waterproof Jacket & Equipment Aftercare page by clicking here.