Tops seem to be interchangeable but they are not. This would easily be solved by doing a screw top. The color changing aspect is really cool though

I bought these as one of the party favor items inside my son’s birthday party favor bags for guests and they were a hit. we had a lot left over so I have been using them for my 3 year old daughter. They are easy to clean and dishwasher safe. They were inexpensive and have been holding up well. They are a little flimsy but they ain’t bad for the price. I’m ordering again for my daughter.

I love the designs and color changing works well with vibrant color. However, there is only one thin ring around the top of the cup that the lid is supposed secure onto and for the life of me I could NOT get the lid to stay on. Only one side would secure and the other side would pop off. Pretty much useless unless you want the drink spilled everywhere by your kid.

These work great for my 6 year old. The lids screw on to make them more secure. Note: This is not intended to be a leak proof cup. If it is drop, it will leak if left on its side (like any similar cup with a straw.) It is great in preventing huge spills though.

The cups leak from the lip if full

Decorative childrens cup. Fun colors and sturdy plastic

My kids love these cups! My toddler gets excited to watch the cup change colors.

Colorful & fun! Lids screw on tightly.

Great size for kids, like the twist top and matching straws.

Kids love them they where a good to give as gift