Instruct: Classify a given review as either positive or negative.
Query: Does exactly what it needs to do, perfectly

Nice size. Seals perfectly and tight - no leaks. The capped cover that lets you shake and then pour from the spout works wonderfully. I've used this for no-frills cocktails when I'm not entertaining (hey, it's not pretty, but it's quicker and easier than a metal shaker) and also to make things like iced tea or lemonade. Truth be told, on a hot day, I've just thrown the iced tea mix, ice and water in this shaker, stuck a straw in the spout hole, and didn't bother with a seperate cup. Not as classy as getting a glass, but super functional for when you don't really care and want to hydrate quickly. Holds up great in the dishwasher too. Overall, just really useful to have in the kitchen.