I can't say enough good things about the products and the customer service. In June I ordered 4 cups and 2 of the companion tumblers. Love them all.
I manage to crack one of the tumbler lids by dropping the tumbler on concrete and it hit the ground just right and cracked. I ordered 2 additional tumbler lids but accidently put them for pick up and not delivery. When I realized my mistake, I emailed customer service and they put them in the mail to me that day. No extra charge just great customer service.
The only negative thing I can say about any of the products is the latch on pop up lids for the companion tumbler do not seem to hold to well after a bit of use. Replacements are not available. I would order additional lids if I could.