Very tough cardboard, my students love these bocks and is a very popular center!

All my kids from toddler to preteen have loved these. I ordered a second set for more fun.

they are great for toddlers, they can built everything they want and use their imagination.

Toddler friendly blocks that they love!

I got these for my 2 yr old grandson. We have had so much fun building things and knocking them down!

Adults and children love to build with these blocks. The kids especially love to knock them down.

The best blocks for toddlers to create with! Highly recommend!

Great building toy for kids who need the gross motor and love to knock things down.

I ordered for the PreK-K Sunday School Class to replace a set that was showing wear after many years. Great product. My grandkids love them too. I will be ordering a set for home. Excellent and timeless for all ages.

Very sturdy blocks. Need large order in order to be able to build things. Worth the price

Great blocks! Easy to manage, lightweight so they wont hurt if they fall down.

Gave these to my grandson yesterday for his third birthday and they were a hit! Theyre very sturdy for being made of cardboard. Our only complaint is that we wish there were more of the large red blocks, or an option to purchase only the large ones.