My 2.5-year-old child loves these. Since they arrived (about a month ago?) he usually ignores his other toys in order to play with them (sometimes along with Preschool Prodigies music lessons, sometimes creatively on his own). He knows the note of each colored bell and follows pretty well with the lesson videos. These chromanotes bells were advertised by Mr. Rob of Preschool Prodigies as quite solid and able to stay in tune and withstand being thrown around by kids. So far they have performed. They do seem pretty solid. I didn't realize from the pictures that the base is plastic, and they are lighter than expected, but they work and they make my child happy.
Rating: [5 of 5 Stars!]