Simple & effective. Always have a bidet with you, wherever you are. No batteries or electricity required, just a powerful cleaning water jet. Intimate hygiene is always within reach and never dependent on (deficient) sanitary facilities on the way.With the Solo Nozzle you always have a bidet with you. Because every water bottle can be turned into a beneficial travel bidet in seconds. The Plug fits on every PET bottle, small or large. There are 3 rings for an always good fit.