To-Go Ware Stainless Steel SidekickProduct Rating: Product Review (submitted on March 21, 2013):
We tried these with our son - who is 4.5 now, and quite able to get into most containers. He couldn't get into these reliably, without risking making a big mess. In the end, we're lucky that he goes to a school that can help a bit at lunch, but we don't send these in much at all, since we know they're busy enough over lunches.
However, they are great for my lunch!