Confidence going into any anal play starts with one thing: knowing you prepared properly. When that part is handled, everything else opens up. You stop second-guessing and start enjoying. That is what this douche is actually for. It is not glamorous, but neither is skipping it and wishing you had not.The one-way valve is the part that matters most here. It prevents backflow, which means the water you push in stays in until you release it. No awkward reversal, no mess mid-process. You get two interchangeable nozzles, a slim 3.25-inch option and a slightly fuller 3.5-inch standard, so you choose based on comfort and how your body responds that day. The whole unit holds about 5.5 ounces, which is enough to do the job thoroughly without overdoing it. It disassembles completely for cleaning, which means no guesswork about whether it is actually clean before next use. Phthalate-free materials throughout.If you are investing in quality anal toys and taking that part of your solo experience seriously, this is the unglamorous essential that makes the whole thing work. You already made the smart choice getting into this. Finish the setup the right way.Slim Nozzle Length: 3.25 inchesSlim Nozzle Diameter: 0.25 inchesStandard Nozzle Length: 3.5 inchesStandard Nozzle Diameter: 0.5 inchesCapacity: 5.5 fl. oz. / 162.75 mLMaterial: Phthalate-freeWaterproof: YesIncludes: Bulb unit, slim nozzle, standard nozzle