Stuff I make and do sometimes.
The rotational ambigram "G" came about because of how you have to rotate the sleeve to use as a base to hold the cup. I wanted the G to be read both ways. If I had time, I might have made the name "Garnet," who this was made for.
I then coated the whole thing in two-part epoxy for that killer shine and weathered up the faux-leather straps with some black2.0 acrylic paint.
The product was a Kickstarter deal I think. Here's the website. Looks like they're still in business.