We bought these stacking cups to take to China for our adoption, because they are very compact when nested. Our new son [...], loves stacking them, and concentrates very hard on which ones fit together. The colors are great, and our kids can play with them in the tub. The only drawback is that there isn't any versatility. The cups stack in a particular order, and that is it. They are probably more educational than fun, since there are different geometric shapes on the bottoms of each cup, and different colored patterns on the rims.

This is the other pails that my grandaughter Robin has. She loves her pails. She has another set and she gets them all together and puts the same colors together. She can stack them all up so she can knock them down. She has learned how to stack them into each other already. They are bright and durable and will last her childhood. They are called "Rainbow Stackers".

I bought these before my daughter was born and gave it to her when she was five month old. She start playing with them immediately and she is still playing with them (she is 10 month now). I stack them for her to take them apart, put small things in each one for her to take out. They also make perfect bath time toys - your baby will be busy picking them up and sunk them in water. It is the cheapest thing I bought so far and she keeps having fun with them.

I bought these for my 22-month old daughter. I should have ordered these for her a long time ago, I think any baby 6 months or over would love these. They are VERY durable, heavy plastic. They are different colors with different designs on top and different shapes on the bottom. When my 22-month old got these, I thought she might be too old for them, but she loves them! She also likes to put other toys inside, etc. Toys R Us had no stackers and I had looked places, I think stackers in general are hard to find, I'm so glad I found these.

I can't believe that my one year old can spend so much time playing with cups! He will stack them and nest them. You can hide things under them or use them in the tub. It is a pre math skill. They are easy to transport and very good quality. I great gift for a young toddler. My only complaint was that they were so hard to find. The only place I could find a good quality product was online.