This Review Title is They don’t even fit together, never mind interlock! Do Not Waist Your Time. and the content is: So disappointed! These are rigid hard plastic that are completely unable to lock together because they are not flexible at all. I couldn’t wait to get these, I had them in the 80’s and loved them...trust me, these are not them! Ridiculous..There are other information for this review, one is This reviewer did purchase it and the other is 0 people think this review is helpful.