This will only take 30 minutes of your time. And the results are just beautiful. If you have an Xacto knife and a ruler, you’re golden.
Use 651 Vinyl which is best suited for outdoor use, which means that you can wash it and it’s totally cool. All you do is use a ruler to cut regular widths, then cut all of the widths at an angle to create pieces for your tumblers.
Just a lightly slice through the vinyl – and you can peel the vinyl right off the backing with some tweezers, then apply to your glasses.