Playtex Sipster Spill Proof Cup

We've used these cups for a long time now.They are very good at preventing spills, at least when the children leave the lids on.They also make an insulated version, which does a pretty good job of keeping the drinks cool.

Most of the problems we've had with them have come after our dishwasher broke.Since we've been handwashing them, the cups have had a tendency to grow mold in the lid and the plastic piece inside.Nothing seems to prevent it from growing - boiling or switching soaps.So we've ended up tossing a lot of them.

They do start leaking after a few weeks of use, most likely because we have to scrub the plastic piece so much to get it clean.

Overall, these are great if you have a dishwasher to clean them.We're still looking for a good handwashable leakproof cup.