Mainstays Kids Multicolor 15 oz Plastic Tumblers, Set of 3

With two toddler boys, I've tried a lot of cups and these are some of my favorites. The lids stay on really well thanks to the silicone ring, and they actually are spill proof even when my kids knock them over. The straws are soft and flexible, which I like for safety. They're also large enough for older children and are really easy to clean since the straw comes out completely. That's a big plus with messy toddlers. They're lightweight, durable, and perfect for little hands. My boys love them and use them with ease.

Beautiful training cups, ideal for children, with a very soft straw and very pretty colors that attract attention. The plastic seems sturdy but not hard; it looks and feels like very good quality material I think they're sturdy, but for an outing they don't seem safe because the lid isn't screw-on and there could be leaks or it could easily come loose .. otherwise, I love them. its weight is ideal