As someone who can't finish a whole regular sized soda can or a tall coffee at starbucks this cup is PERFECT. It's so cute and easy to clean and it feels good in your hands like ergonomic and the straw isn't off-putting like I thought it would be. I will probably buy another for myself and maybe some for gifts as well.It asks about it being leak proof so I tipped it upside down above the sink (with the lid and straw in) and some water did come out through the straw but I think if you had the straw hole plugged and the cover on the mouth piece it would be at least leak proof enough to keep it from being a disaster (whole drink spilled in car or on yourself in public for example). It definitely could not be kept upside down in a suitcase or backpack but I think if someone accidentally tipped it or held it upside down it wouldn't be more than a few drops/small amount starting to come out of the straw. To be clear there is a tiny bit of gap between the straw opening and the actual straw so some could drip out of there too.Oh also it fits perfectly in my car cupholder.It keeps things gold maybe slightly longer than a normal glass but it is by no means a thermos or something that will keep your drink cold through an hour commute in hot hot weather.Was surprisingly easy to clean. The lid is plastic and doesn't have any weird crevices or separate rubber pieces so pretty streamlined. I wash out the straw and lid and then the cup in less than say, 30 seconds.Overall, I absolutely recommend. It is sturdy and well built. Worth the price for feel and aesthetics alone. If you aren't sure about this one, just get it.Sorry about my dog and notebook in the photo lol