This easy to handle simulator of a human buttock can be fastened like a belt on the body of a student or a training doll. It allows practicing of intra-muscular injections and also the injection of fluid (water) is possible. If the injected part is incorrect, a buzzer, which works with a 9 volt battery and a red light, will give a warning sound. The durable, soft and very realistic skin shows no needle marks even after many exercises.