The Extra Large One-Way Valve Enema Bulb works just like our other one-way valve enema bulbs, but with an extra large filling capacity. Its nozzle is 5.5 inches long, less than 1 inch wide at its widest point, and has a one-way valve that lets water out but not in to prevent messy backflow when you use it. Its bulb is large enough to hold 15.5 fluid oz. / 460 mL of water or another enema solution. The nozzle is tapered and has a multi-directional tip, and easily detaches from the bulb for easy cleaning. The Extra Large One-Way Valve Enema Bulb has a bulb made of silicone and a nozzle made of ABS plastic, and can be cleaned using warm water and antibacterial soap.