The anal plug from A-ONE in Japan has an excellent shape that fits well and is easy to insert. It is suitable for anal play and development and expansion. The egg-shaped head is easy to insert and can stimulate the prostate area for high comfort. There are three different sizes available: S size, which is similar to the size of a thumb, is suitable for beginners; M size, which is similar to the size of a glans, is suitable for intermediate users; L size, which is similar to the size of a small egg, is suitable for advanced users.