2 [win] — Ok Re Helium

Reviewers from platforms like UKClimbing and Mountain Wagon categorize it as "Dirtbag approved"—an affordable, effective tool that does exactly what it's meant to do without extra frills. Gear Review: Outdoor Research Helium II - Mountain Wagon

Surprising longevity for such thin material. No Pockets: Only has a small chest pocket. Great "Just-in-case": Ideal for summer storms or wind. Not for Heavy Rain: May wet through in prolonged downpours. Expert & Community Consensus Ok RE Helium 2 [WiN]

It is fully waterproof and serves as an excellent windproof barrier for hiking or running. Reviewers from platforms like UKClimbing and Mountain Wagon

Weighing approximately 150g , it is extremely lightweight and compresses into its own pocket for easy storage. Great "Just-in-case": Ideal for summer storms or wind

To save weight, it lacks features like hand pockets or pit zips, which can make it feel clammy during high-exertion activities. Pros and Cons Pros Cons Ultralight: One of the lightest shells available. Breathability: Can get sweaty/clammy inside.

The (often associated with "WiN" or "WIN" in retail contexts indicating "Wind" or "Weather" protection) is a high-performance, ultralight rain shell designed for emergency weather protection. Core Performance