Got so tired of the heavy china coffee mugs. These are just what we wanted - lightweight, sturdy, and doesn't break our wrists when holding them. :)I bought these for my travel trailer after breaking a few ceramic mugs when opening the cupboard after bumpy roads. I was looking for unbreakable, microwave safe and big enough to hold a full cup of coffee. These are exactly what I was looking forThey appear sturdy. Described as 14oz. No, I would say 8-10oz. I prefer larger so I can add ice & half n halfThe width from the inside cup handle to the cup is narrow so your fingers will touch the cup, no room to space your fingers apart top to bottom so that can increase the chance of dropping it for those with butterfingers like me. I hope the insulation will protect my fingers from being burned since they must touch the cup. Most coffee cups give your fingers heat protection with space :0(Nice unbreakable (very important for my camper) cups. Only partially stackable.Great item for my RVI liked the colors of cups. The cups were needed for my husband and the handle didn’t work for him. I just didn’t have a need for more cups since he couldn’t use themNot everyone is going to use my idea,,,, but we have a camping spot and want to limit wasteful cups. So we have a kitchen with lattice and I have everyone's name written on a cup so they can get a drink, re hang the cup, and it waits there on the wall til needed again.Love them for camping. Don't have to worry about them breaking. They keep the coffee pretty hot too!