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Bought these for my kids. They use water bottles at home every single day and I was so tired of plastic kids bottles. These ones came with two lids but you can also buy replacement ones. Steel mug keeps water cool, and is super durable. Good size- not so big that my 2 year old can't handle it but big enough that my 5 year old has enough to drink. Love the wide mouth- makes it so much easier to fill! Wish it was dishwasher safe, but still really easy to clean.