Not sure which I would like best, I purchased both the Rab Windveil and Rab Challenger jackets (Size S) and compared them. The Windveil is a "micro pertex" fabric and is far thinner that that of the Challenger 2.5 Pertex. Both jackets measure 26" down from base of hood to hem. The bottom width hip-to-hip on both measures 19" across the front, and 20" across the back that dips lower than front. On my 5'3" slender, slightly curvy frame, the jacket just covers my backend. In a jacket, I like a little length and ease, and this is where fabric comes into decision. The Windveil, because of thinner fabric and sleeve style, fits snugger and the sleeves are very long. The Challenger, due to sturdier fabric, fits more smoothly and looks smarter on. The Challenger sleeves can be rolled up to grey (lining) small cuff, which to me looks better than the bunched up fabric at wrist on the Windveil. My impression is that both jackets are for slender frames with long arms. The Challenger jacket is more substantial and still packs small in built-in pocket. For the money, I think the Challenger jacket is smarter investment and it's the one I'll keep. Initial impression is that the fabric will do the job, and I look forward to putting it through summer hikes in rainy, windy weather in the Midwest.