Harmony is a great solo toy, either for penetration or a thrilling external massage from the ridged base.
Share the fun ... harness play can be twice as nice! The beautifully contoured shaft and base stimulate both partners.
All this and it even vibrates if you want it to! Insert a bullet vibe, such as a Power Bullet, in the hollow space under the base.
Safe to use vaginally or anally.
Harmony truly is a toy for all seasons.
Vibe not included.