{"product_id":"castelli-free-ar-4-0-short-sleeve-jersey","title":"Castelli Free AR 4.0 Short Sleeve Jersey","description":"\u003cp\u003eOftentimes when a company releases a  new version of a product, the previous iteration goes away. Not so with  Castelli's Aero Race 4.0, now dubbed Free AR 4.0 Jersey FZ. That's because the  4.0 strikes a great balance between aerodynamic performance and all-around  comfort. And new graphics for the 2015 release of the 4.0 Jersey keeps things  looking fresh. \u003cbr\u003e\n  \u003cbr\u003e\n  The Free AR 4.0 Jersey is still super  fast, saving about 12 watts at 40 kph over a regular jersey, according to  Castelli's wind tunnel tests. The excellent-wicking Velocity Dry fabric graces  the front of the jersey, just as it does on the Aero Race 5.0. But here the Velocity  Dry fabric extends to the shoulders.\u003c\/p\u003e\n\u003cp\u003eA silicone gripper elastic band at the  waist keeps the jersey in place, even when pockets are overstuffed, and Giro 3  arm elastic grippers present a smooth face to the wind, and prevent bunching up  or pinching. And the full-zip front means that when the road tips up and  cooling off becomes more important than aerodynamics, riders can easily unzip  for full venting. \u003c\/p\u003e\n\u003cp\u003eThe lightweight Free AR 4.0 Jersey FZ  offers an impressive package to the performance-minded cyclist looking for  those extra seconds. \u003c\/p\u003e","brand":"Castelli","offers":[{"title":"Black \/ S","offer_id":43509325201452,"sku":"A15019010-2","price":64.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/castelli-free-ar-40-short-sleeve-jersey-6686774.jpg?v=1771301828","url":"https:\/\/ricycles.com\/products\/castelli-free-ar-4-0-short-sleeve-jersey","provider":"RA Cycles","version":"1.0","type":"link"}