If it's race day and the rain is coming down in buckets, you obviously need to stay dry to win. Instead of throwing on a flappy jacket, gain an advantage over the pack with the Castelli Gabba WS Short Sleeve Jersey. The Gabba WS jersey was designed hand-in-hand with the Cervelo Test Team and the Garmin-Barracuda cycling team to create an edge against the brutal weather of the spring classics. The Gabba WS fits and feels like an aero jersey, but with all of the weather protection of a rain jacket.The Castelli Gabba WS Jersey is a rain-specific version of the Castelli Aero Race Jersey. In the development stage, Castelli knew that no material existed to meet Cervelo Test Team's demands for a rainproof race jersey, so a partnership was formed with W.L. Gore to create the new WindStopper X-Lite Plus fabric. The new four-way stretch fabric allowed the construction of the form-fitting, windproof, and breathable rainproof jersey that we have today. For further rain protection, Castelli included a storm flap off the rear jersey panel to protect you from wheel spray, and the three rear pockets feature eyelets for water drainage. To add extra comfort, Nanoflex inserts under the arms and zippered chest vents allow controlled temperature regulation and a better fit. Castelli finished off the Gabba with a silicone gripper at the waistband to control jersey creep and rear reflective tabs for enhanced visibility in gloomy conditions. The end result of all this innovation is a jersey that Roger Hammond calls the best jersey he's ever worn. You can't go wrong with that.The Castelli Gabba WS Short Sleeve Jersey is available in six sizes from Small to XXX-Large and in the colors Black/reflective silver and Yellow Fluorescent/reflective silver.