This jersey is perfect for those chilly, brisk days. I love the bright blue and the incredible softness inside. I normally wear a small in non-cycling clothing but was a little worried the medium Castelli might be too small. It was a perfect fit with still enough room for a thin layer underneath. I'd actually give this 4.5 stars if I could, because the zipper is scratchy if I fully zip it up for windier days. I wish there was an extra bit of fabric to protect the chin but I just end up leaving the zipper a little lower.