With double knitting, the piece is completely reversible, and it shows as knitting on both sides. For the first one, I was still experimenting with the techniques for double knitting, so I wasn't quite to the point of knitting these in the round. Instead, I made this one with the button detail that can fit with coffee cups with handles.
I had always wanted to experiment with vertical stripes, and I was thrilled with how this one turned out. The next steps for my double knitting adventures will definitely be in adding colors and in using different styles of stitches.