J. Crew Small Field Mechanic Jacket Green Meghan Markle Favorite J. Crew Field Mechanic Jacket as seen on Meghan Markle. Her favorite wardrobe staple she’s worn on multiple occasions including a royal tour with Harry. J.Crew's field mechanic utility jacket for men has been sized down and slightly shrunken so it's just as flattering on a woman. garment-dyed, broken-in and built to handle everything from tailgating to those chilly morning commutes. features a hidden zipper with button closure and a standing collar with a zip-in hood and roomy pockets. E0945. Khaki Military Green