This jersey is exactly as described: a long sleeve SUMMER-weight jersey. That's what I wanted and I'm glad to say it delivers. I got the forest green and it has a beautiful no-fuss, minimal look to it. The fabric is super lightweight and ideal for long days in the saddle where you're probably going to sweat off your sun protection and won't be able to put on new stuff. By blocking the sun and absorbing my perspiration, it actually has a cooling effect when riding on a warm day.
And while it's certainly not going to be a very warm jersey for cooler temps, Paired with the wind vest it's perfect for the shoulder season. Mornings where you head out and it's 60deg And you don't want to wear a thermal, but need a little something extra to keep the chill off.
Complaints? The fabric is very delicate. Got a few snags the first time I washed it, (Which are very visible on the forest green fabric because the interior is a lighter color). So, definitely zip it and wash it inside out. The pockets also seem very loose. I wish one of them had a zipper or were a little tighter fitting to hold my stuff more secure.