This being our first glass toy I wasn't sure what to expect, but it's definitely jumped up to the top of my favorites list. The rigidness of the glass makes the toy easy to insert, and the feeling is like no other. With the glass material, hot or cold play are both easy options to explore. Also, the flared base means it can be used with a strap on if you're so inclined. This toy seems to be just the right size to fill you without being uncomfortable. Also, being glass I feel like I can get it really clean after a fun play session!