These durable Kegel exercisers are weighted just right for maximum pelvic muscle strengthening. Featuring removal inner balls that can be removed from their stretchy silicone sleeve, they provide both tightening and stimulation of the vagina. The phthalate-free material is non-porous, easily sterilized, and ideal for long-term wear. Measurements: 5.5 inches in total length, 4 insertable, 1.25 inches in diameter. Material: Silicone, ABS plastic. Color: Purple