LELO LUNA Beads are the world's bestselling Kegel weights system. They are also the only Kegel exercise system to give the option of mixing and matching weights; each set includes two 28g and two 37g beads which can be combined in the silicone harness for a more tailored routine LELO's elegant update on the classic 'ben wa balls' offers users longer, stronger, more attainable orgasms; reduced risk of incontinence and other pelvic floor disorders; and a faster return to tone and tightness after childbirth. Guidelines Only: LUNA Beads are recommended for women over 30 years old and/or women who have experienced childbirth. As with all pleasure objects by LELO, LUNA BEADS are designed to offer total peace of mind in whatever situations arise. Made with FDA-approved and phthalate-free ABS/ silicone, the set of two 28-gram and two 37-gram beads are intended for developing increased resistance over time. Every LUNA BEAD system comes presented in an elegant gift box and luxury satin pouch, in addition to a user manual, retraction leash and full 1-year LELO warranty. Girdle Size: 36mm. Bead Size: 36mm.