Smoth operator, thanks to its material, is a flexible and adjustable vibration ring for couples. very easy and convenient to use. improves erection for him while stimulating her (clitoris) once he is in a correct position. being able to extract the vibrating bullet gives the possibility to be used to stimulate other erogenous zones (external), making it a 2-in-1 toy. just add a few drops of lubricant to make the experience even more pleasant. 100% silicone if you don't sell it, change it !!!! From the date of your invoice, if you do not sell the product s pleasures, you can change it for any other product in a period of 6 weeks. * the box must be in perfect condition, in case of breakage or damage will be charged an extra € 0.80. * the change will not be accepted if the inner bag is opened or handled. * the customer bears the costs for the transport of the return.