This base layer does the job, and is very comfortable to wear with bibs. Its also warm and very good wicking.
Great baselayer. Fits me perfect the large. I am 6'2 and 160 LBS and it just sits nice against the body. Only negative is the label on the inside. Sometimes it can be a little itchy against the skin.
High quality product and good fit. Perfect for autumn time.
Like all Castelli gear it runs small but I appreciate how short the length is, no need to worry about bunching up extra fabric around the waistline. I haven't worn it on any subfreezing rides but it has been fine for mid to upper 30s with my Gore Wear jacket, I do tend to run warm though.