I bought three sets of these beads and used them to create necklaces and keyrings at a fundraising event. The beads are solid, vibrant and lettering is funky. Only problem was the selection of letters meant that I ran out of some letters very quickly and there is no opportunity to purchase refill letters.
Educationally these beads are not ideal as they are all in capital letters and children need to know and recognise small letters to start with.
I do agree with another reviewer who commented that there was no lid, and this is inconvenient especially since the beads are small.