New With Tags. Outdoor Research Women's Helium Rain Jacket. Black. Building on the legacy of the award-winning Helium Collection, the revamped Helium Rain Jacket and Pants take durable lightweight waterproof protection to an entirely new level. Pertex® Shield with Diamond Fuse Technology enables the Helium Rain to be 5x more tear-resistant than the Helium II, and an even lighter weight. Completely seam-taped, waterproof, yet still breathable and comfortable in rugged conditions, the new Helium Rain Jacket and Pants will be the first thing any hiker, peak bagger, or off-trail adventurer will pack for the most durable lightweight rain protection.