DESC: Block sets come and go, but you just can't beat these giant cardboard bricks! Stack 'em higher than your head, build amazing structures (and then knock 'em down!). Kids can even walk and stand on them. Feather light, yet large red blocks are strong enough to support 150 lbs. Includes 40 corrugated cardboard blocks in three sizes. 15-minute assembly. For ages 2 and up.