Review on 32Oz Fidus BPA-Free Water Bottle With Time Marker And Straw For Daily Hydration, Fitness, Gym, And Outdoor Sports - Motivational Design To Encourage Drinking Enough Water by Kenny Sanchez

Ordered 2 of these for my kids. I have the larger 64 oz version of this same bottle. I can't say for certain that they are leak proof, however, I will say that my kids swung them around a good bit yesterday without spilling anything. I know that my larger one will in fact leak unless its locked. If it's locked there doesn't seem to be any leaking if I drop it. I imagine the same would be said for these, but again, I'm assuming here as they're made by the same company. I love that these are plastic, meaning we won't hear the constant clang clang clang of metal hitting my tile because they were dropped.