While a bit smaller than I had expected, these are still quite fun. The plastic is light-weight, but reasonably sturdy. There should be no fear of breakage if you're careful. The transformations are creative and fairly involved. Articulation is good. The designs are fairly whimsical, coming from a children's program, but are still fairly detailed and well sculpted. While not for everyone, I would certainly recommend this to fans of the show or combiner enthusiasts.