My girlfriend purchsed the Aerolight 20oz as a gift. Its the second stanley thermos she has purchased for me that I want to return. The Aerolight lid has a mouth peice I can not cover with my lips to ensure when I tip it back it does not flood out from the sides. The design is not ergonomic, and there is not a option to change it. The first thermos she purchased had a giant metal handle i did not like. I returned that one only to get the lid with a flip top. I can not stand that lid either as you can not take a sip without removing your hat. Yes I could go with the flip top and remove the straw. My point is Stanly trying to redesign lids, but do not meet the needs of the consumer ergonomics. Other than the thermos keeping liquids cold or hot, i would not recomend this brand due to the limited mouth piece options.
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