InsectSheild Mosquito Body Suit (Medium) InsectShield Treatment Repels Mosquitos InsectShield uses permethrin which is a man-made version of a natural insect repellent found in a type of chrysanthemum plant Jacket features a zippered front for easy on and off Body suit includes head net, jacket and pants, all made from fine polyester no-see-um mesh; all 3 items fit in the included nylon storage bag