A plastic zipper with instant release function when the zipper is fully closed. The innovative function is a great supplement and provides extreme convenience in some special fields, such as instant clothes off for professional athletes before competition, clothes of work wears and one-off clothes. Flash-out zipper is a KEE patented zipper, and is also the zipper used in the trousers which holding the Guinness Record of “The most tripper trousers worn and removed in one minute”.