Yiching says--We use these thinner and softer cups for our iced drinks at the caffe that can be sealed on the top (so we don't need to use lids) and more eco-friendly.
We love these cups, but because they are softer, we'd see some silly ones once in a while...
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Of course we don't use them on customers. We put them away and use them ourselves.
At least they are still sealable, and are unique and sorta cool looking.