I received this product for my honest review. Tumble Town Foam Blocks were easy and fast to assemble. I really liked how you can hide the zipper in each cover. My 2 1/2 year old toddler was able to stack them up easily, but he mostly had a blast knocking them down and jumping on them. I rated them a 4, because although they are not meant for jumping on, the foam can be a little sturdier. It's easy for kids to flip off of these.