I wish I'd bought this jacket sooner. It's perfect for most of the hiking I do in the southeast and southwest. For temps in the 30s to 60s, just wear a short sleeve shirt underneath and you're good to go. The lightweight vested material on the front adds just enough insulation and wind protection without making you overheat. It's an athletic fit. I'm at the end of the medium range. The recommended size fit like a shirt, so I went a size up so that it fit more like a jacket.
This review was written in the old system and had content requirements that are different than reviews written today.