My daughter wanted for school a thermos and we opted for this. Actually a very good product. Clasp keeps tight so far and is easy to use by children. The only drawback, and therefore "star deduction". On the cover / cup has a short time the black "inner life" detached from the pink metal. We then had the screwing always 2 parts in hand. Would say poorly glued. I have even fixed it with superglue - now it holds.