The Lelo Mia 2 is a small, but powerful bullet vibrator. Measuring at just 4 1/2 inches long, it is the perfect toy to use during penetrative sex or solo for masturbation. My partner and I were looking for a powerful, small, rechargeable vibrator to use with our strap-on toys and I think I've finally found the perfect match. Because of its size and lack of a flared base, the Lelo Mia is not suitable for anal sex. I would personally recommend that you use this toy externally only, although it does have 1 1/2 inches of insertable length if you wish to use it for vaginal stimulation.