BioGreen Biodegradable BPA-Free Sport Bottle with Wide Mouth DuoFlow Lid (20-Ounce)

... Nice softer plastic bottle and we like that they come in different color combintations so our kids do not get theirs mixed up. The 20oz middle size is perfect size for grade school kids and my 1st grader can open/close easily to refill on her own. It is about the perfect amount for all day at school and sporting events. ...
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Klean Kanteen - Sippy Stainless Steel Water Bottle 12 oz - Available in Various Colors

... I thought that I was finally going to have a sippy cup for my daughter that wouldn't leak. I was wrong. The vent hole in the Avent sippy nipple drips, even with the valve securely in place, AND when all parts are dry when putting together. I don't know why more people don't have this problem. I even tried using another Avent top (since it comes with 2) but it still leaked. Very disappointing.
On the flip-side, my daughter loved it! Although not being insulated is a bit of a drawback for holding. ...
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