These prisms are exactly what I was looking for. They're big enough to not be a choking hazard, but small enough for the children to handle. They love looking through the prisms or making rainbows.

Myself and other teachers tested out the prism and it works better than the smaller size prisms we have in the classroom. The larger size is easier to turn and reflects the light much better.

This is a wonderful product! Kiddos love it!!!! Two thumbs up! :0)