Saucony Men's Nomad Jacket FlexShell: 100% polyester and waterproof membrane/Drylete: 92% polyester/8% spandex Imported Exceptionally lightweight and stretchy Flex Shell on the front, sleeves, and upper and lower back is wind and waterproof to keep nasty weather at bay Thermal, stretch fabric across the back and under arms keep you dry and moving with ease Soft, ultra-breathable fleece lining and back vent wicks sweat and feels great Front and back reflectivity keeps you visible in low light Zipper garage for chafe-free comfort