The shape is friendly for my grip and seems to be ergo designed. I have knocked one over on the table and even dropped one with no issues but I could see how if hit right, it may shatter like other plastic type items. Each glass holds 12 ounces so perfect for a cold soda, beer or other drink. It says they are dishwasher safe but I hand wash mine. I love the look and the way they hold temperatures so definitely a recommended product. Very glad I purchased these.
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