I bought one of the Yeti 26oz rambler tumblers and found it won't fit in my Chevy Volt's cup holders (too big). So I designed an adapter and added a little multicolor to it. You can take this in and then add your own text. Enjoy
Good design. My thermos is apparently wider, so it didn't fit, but that's my fault for not measuring it. It is less than a cm too small. I don't know how to design. Can you make a design that is bigger, or tell me how to adjust your design, if possible?