This water bottle has been a nice upgrade to the sippies that my kids are used to using. They love that their hands fit around the plastic cap loop so they can carry their bottles around. So far, there are no leaks when the spout is closed, unless the silicone stopper part underneath the cap isn’t pushed all the way in. My two year old also is so proud of himself when he pushes the bottom to flip the spout out, which is adorable. In design, I love the plain grey sports look! The only improvement I would make is to not make it so tall because it’s too tall for my kids’ lunch boxes.