The Assistant is the aptly named enema douche that is very beginner friendly and easy to use. This enema bulb is a reusable, easy-to-clean personal enema and cleansing kit. It is very comfortable for first-time users, due to its tiny, skinny nozzle. The nozzle screws in for less chance of water leakage. The nozzle measures 0.3" x 2.6". This enema bulb holds eight ounces of fluid.