My son had just turned 6 months old when I purchased this. It was our first Haba toy, and after exploring several of them in stores, I decided the size of this toy was best for our current needs. Many of the other Haba toys seemed too large and didn't seem to have enough "nubs" to chew on for a baby my son's size/age. At first, this toy didn't seem like much of a hit. He would hold it and attempt to put it in his mouth, but usually tired of it quickly and wanted to move on to something more stimulating. As he approaches 7 months old, he's really starting to take an interest. His gums are swollen and he's in the throws of teething now, so this toy has gained new respect in our house. It's small enough that he can hold it, but also has enough ridges that his clumsy hands don't drop it easily. He usually fits two of the sun rays in his mouth at a time to maximize the gum surface area he's reaching. There is a small bell in the center of the sun- it doesn't jingle as much as I'd prefer (my son likes lots of bells and whistles with his toys), but it's a soft, pleasant sound nonetheless.