I love everything about this bottle - the beautiful seafoam green color, the size, and the functionality of it. Not too small, not too big - perfect as my every day water bottle without weighing me down. Keeps my water at the exact temperature as it was when I initially filled the bottle for hours. The mouthpiece cover is great - keeps the mouth area clean when the bottle is in my backpack. Even with the mouthpiece part uncovered, water will not leak out if the bottle is turned upside down. There's also a really useful handle on top that can be released when you want to hold your water bottle. Cannot say enough great things about this product!!