Read reviews that mention:
Perfect for my home daycare. The kids love sitting on them and also stacking them up. I bought 2 sets. Love them during the rain when we have to be inside because the children can pick them up and stack them all sorts of ways. They play the floor is lava and jump from one to another. Sometimes we read books in our little library while sitting on them. Very versatile. I don’t have to worry about them hurting each other because they are light and soft. They have held up great and work for all my kids age 0-12.
I can even sit on them, they do compress a lot and I’m sure if I did it all the time they would wear out quickly but I am also 180 lbs.