- A step above the standard, this jacket is a nylon version of the U.S. Air Force current-issue cold weather flight jacket. 100% nylon shell is water repellent and fully lined with quilted nylon and polyester batting using a dumbbell pattern stitching (not reversible). Storm flap and stand up collar protect against the elements. Features large lined front cargo pockets with double needle stitching and VELCRO closures. Jacket also has a rectangular VELCRO patch above the left chest¡ªgreat for a name tag or other identifying insignia. In our experience, the CWU 45/P runs slightly small. If in doubt, please order the next larger size.