Bests & Worsts Reviews from Amazon

I got this for my son and they are great for everyday use. He takes it to school and it is perfect to avoid accidental spills. The only down side I would say is they are smaller than I would like. When he goes to basketball practice he has to fill and take both or he will run out of water very quick. I attached a photo next to a regular sized drinking glass to show size and a video to show how the auto seal works