Tumblers are nice but not necessarily worth the money they cost. Not dishwasher safe and the tumblers gather condensation between the inside and the outer layer of the cup. In addition customer service is horrible. I ordered 30 water bottles for family in different States. One order of 10 arrived just wrapped in brown paper. All other orders arrived in individual boxes, easy to wrap. I had to send wrapping supplies to my family member who had to wrap 10 bottles without boxes- difficult to do. Customer Service refused to acknowledge the issue. I was shocked since I was a good customer and only requested cheap boxes to complete my gifts; these boxes were included with other orders at no extra cost. Customer Service responses to my request were not at all accommodating. Will not purchase anything from them again.