Bests & Worsts Reviews from Amazon

Okay. So here is the skinny on these cups. Do you have a child that is off the bottle or close to leaving the bottle? If you answered yes, then eliminate all ideas or notions for sippy cups from your mind and buy these. These are awesome no spill cups that rely on a child's natural instinct to press down with their mouth on the lip of a cup when they drink. 1 week after switching to these, our toddler was able to take sips from regular open cups/glasses. They don't spill when dropped or knocked over...although, falling from a high enough distance will cause a spill. These cups aren't miracles when it comes to no spill. Given enough force...liquid will come out. This is true of ANY sippycup. But during the normal every day to day routine, these can definitely be considered spill free. The difference here is: this cup, by design utilizes the child instinctual behavior to teach them how to drink normally out of a cup. Your standard spouted sippy cup is just a bottle with a harder nipple. These cups are well designed, well engineered. I don't often write reviews...but these are pretty awesome. You will see people make complaints about these cups. They fall into one of two categories. I'll address them individually: 1. THESE ARENT SPILL/LEAK PROOF. Yes, because when I buy a sippy cup, I expect the cup to magically cancel out the laws of motion, force, physics, momentum and intertia. The fact that this cup does not suspend the laws of the natural world when it comes to matter, and its Newtonian movement has totally made me rethink my purchase of these cups.No. Sorry. That's a ridiculous notion. Given enough force, and depending on the angle of the hit...fluid may come out. No sippy cup in the world can meet this impossible standard. Ignore reviews making this complaint. 2. OMG, I DIDNT KNOW THE RUBBER PART CAME OFF, THERE'S ALL THIS MOLD. All I can say to this is: how were you allowed to move out of your parent's house? I mean, seriously. These are your kids. You didnt look at this product, WASH IT COMPLETELY before using it? You didnt read the little card that came with it that explained how the top came off? Seriously? Anything will mold if you don't clean it, and it's in a place where moisture can be trapped. That's like, what... 3rd grade science class? Come on. This is a solid product. If you have half a clue, you'll be able to see why. Ignore the naysayers! Buy these cups for your toddler. =)