Castelli's Prologo HD Jersey is one of the more conservative jerseys in the Castelli line-up. The paneling is rather simple for Castelli and the logo somewhat understated. Still, this is no plain jersey.
The bulk of the jersey material used is Castelli's Stratus fabric with Prosecco treatment. Stratus is a dual-layer 100% polyester knit weave. The inner layer is a multifilament web that moves moisture from your skin or base layer to the outside of the fabric. The outer layer is a micro fiber weave that allows the sweat to evaporate in the wind. Prosecco is a treatment that helps water disperse and evaporate faster rather than staying in the jersey. There's a mesh panel down the back from the shoulders to the top of the middle pocket. This panel allows for a little more stretch and a little more venting in a place where the wind can't get to you. At the top of the mesh is a rubber Italian tricolor permanently bonded to the fabric.
The set-in sleeves and waist have a light binding in the cuffs, but the jersey is designed to fit close, so these simply add to the mooring of the top to your body.
There are three standard rear pockets with the Castelli scorpion on the middle pocket. The right side gets a mini-zip pocket for precious and small items like your credit card and keys. There's a Castelli logo emblazoned across the chest, and the hidden front zipper is 35cm long.
The Castelli Prologo HD Jersey comes in Red/White/Cyan and White/Black/Red. Sizes run from Small to XX-Large.