Castelli Insider JerseyWith indoor training gaining ever more fans thanks to a new breed of smart trainers, Castelli's Insider Jersey is specifically designed to take on the heat and sweat of a tough training session on the turbo trainer or rollers. If you prefer the focussed effort of an indoor training session, rather than battling cold weather, traffic and poor roads, then the Insider Jersey is designed just for you. A semi-open 3D mesh fabric is used to guarantee excellent airflow and it's incredibly good at wicking away sweat. The fabric is thin, verging on transparent, but it retains modesty for group training sessions and you can even wear the jersey for the very hottest of outdoor rides. Thanks to the very-quick drying characteristic of the Insider you'll also feel more comfortable during the cool-down period of your session. A full-length zipper makes control of extra ventilation easy and if you do want to strip off after warm-up then it's nice and easy to do so. The jersey doesn't ignore practicality, the 2 rear pockets are ideal to stash a smartphone/music player as well as fuel for your training session while a low collar enhances airflow too, letting the fan in your training den do its work to cool you down.Features:Materials: 100% Polyester3D Mesh lightweight 100% polyester wicks moisture and dries quicklySemi-open mesh allows maximum airflow without becoming too transparentFull-length zip makes for easy on and off2 rear pockets for stashing whatever you needCan be used as hot weather outdoor jerseyWeight 88 gramsBuy Castelli  Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.