Castelli Fly Jack-sey

The Castelli Fly Jack-sey is for training rides scheduled on those in between temperatures when it’s not frigid cold, but chilly enough for a light layer of protection. The Fly Jack-sey shields from chilly weather, but you won’t overheat when it warms up a few hours into the ride. The versatility of Castelli’s Jack-sey has been made possible with the brand-new lightweight construction— Castelli FLY Fabric Technologies: FFT. Outer layer of the Jack-sey is treated with a water-repellent finish to help keep you dry in light rain. The GORE-TEX INFINIUM™ WINDSTOPPER® lining on the front blocks chilling wind while still allowing air to circulate so you don’t overheat. The lightweight CLIMA SL insulation is just enough to keep you warm while adding very little extra weight. The outer shell and lining are eco-friendly. A low collar helps regulate temperature and it sits close to body, so no cool air seeps inside. The close-fitting construction combined with elastic and silicone at waist keep Jack-sey in place. The YKK® Vislon® zipper can be opened from the top or the bottom and three rear pockets have plenty of space to store needed nutrition. There is even a zippered pocket to store valuables. On low lit days, reflective tabs increase visibility.