The Castelli Gregge 15 Sock carries the baton from the highly acclaimed original Gregge Sock - Castelli have added 3 cm onto the cuff for even greater warmth and comfort. The foot-bed has also been improved giving it a thicker construction along its full length. This creates even more plushness and luxury off the bike and greater thermal insulation on it. Visually the Gregge now features brand new colours and a more symmetrical stripe pattern which will still looks awesome on the bike and even better in the office. Up your sock game with some Gregge Socks this winter and have your Castelli unfair advantage running from your head down to your toes.