These are 26.5 oz jumbo glass sports mugs that I am able to personalize with a name. I put a tux underneath the name. You are also able to choose the color of the name on the mug. Perfect gift for your groomsmen! They are heavy, great quality mugs! Please note: these mugs are to be hand washed only. They are not microwave safe, dishwasher safe, and they cannot soak in the sink.