Review on 🍼 THERMOS FUNTAINER 12oz Stainless Steel Vacuum Insulated Straw Bottle for Kids, Blue by Adam Gray

keeps the water cold all day and doesn't run out What else can I say?! When I first got them, I filled them up and checked for leaks. When the lid was closed and I laid it on its side, there was water on top when I opened it. I was speechless. Looks like water leaked from the straw vent. Then I noticed a slight bulge (yes, that's the technical term) on the lid, which obviously should have plugged that hole with the lid closed. After examining it more closely, I found I couldn't quite get it out when I inserted the straw, the part where you sip. So you push it from below, but after that you grab the part you're drinking on and pull on it. It pops out a little more from under the lid. I then closed the lid and it hasn't leaked since. I think anyone else who has reports of it leaking probably didn't get it. And the one who uploaded the video where it leaks, that is, pours from the straw when the lid is not closed. Oh yes, lady. Straws don't close by themselves. If you turn it upside down, the water will naturally run out. Oh well. It has tons of different options and my kids love them! Also, they're not that heavy. Some people act like their kid can't lift them, my 2 year old daughter wears them all day no matter where she goes.