yticirtwrote a review of Castelli Velocissimo Giro Full -Zip Jersey - Short Sleeve - Men's on September 21, 2014
Familiarity: I returned this product before using it
I'm 5'7", 140, 10.25" bicep relaxed, 37" chest, and wear M in PI and Castelli. I ordered a M. The fit was as expected except the sleeves had a 1" to 1.25" gap. The zipper has large teeth, the type you typically find on jackets. Otherwise, the material and quality is as described in the other reviews. I have numerous Castelli jerseys and never experienced this fit issue. I'm returning the item b/c I like a tighter fit in the sleeves.