I love this Castelli Jacket, it is perfect for riding in 50 to 60 degree weather. The ergonomic collar completely covers the whole neck area, which really makes a difference in keeping wind out and staying warm. I always know I am perfectly dressed for the temp when I wear this jacket. I also have the warmer Castelli Jacket that I wear when it is below 50 degrees.
They run on the small side, so the large fit me perfectly.