Looking for a more intense sensation with every orgasm? The inner weights of the Fun Factory Teneo Duo Smartballs move silently creating an amazing undulating sensation. When inserted into your vagina they can be worn and enjoyed for several hours providing you with endless pleasure. The Fun Factory Teneo Duo provides you with a targeted workout of your pelvic floor muscles and trained muscles lead to stronger orgasms for you and your partner. Wear them to the shops, out on a date or even out dancing if you dare. Wear them during a good spanking and you'll be begging for more. Your pelvic muscles will be toned up in no time and your partner will certainly feel the difference. The Fun Factory Teneo Duo Smartballs are a fun way to get pleasure with your pelvic floor exercises.