Wearing the Strengthening Balls for 15 minutes a day trains your pelvic floor muscles - the muscles that enable you to experience breathtaking orgasms. This intro set includes 3 variable weights to support a gradual training of your pelvic floor.- More fun for both men and women during sex thanks to muscular constrictions - Body friendly silicone- Safe use thanks to return strap- Easy to clean- Orgasm training set: 61.9 grams (regular). 82.1 grams (skilled). 97.9 grams (advanced)- Diameter: 3.8 cm