Nice work! I'm trying to talk my wife and son's girl friend into giving a pair a shot as I am writing this post. They have been sewing today so I showed them your post and the Dirty Girls web site. Looks like a big no way. I will not give up. I know they will help if I make my own feeble attempt to sew.
Thanks for the inspiration.
And I don't think Dirty Girls cares if a few of us make ourselves a pair. I did not see a patent. Besides: "All sales proceeds are thrown right back into the dirt and donated to ultra-running events, trail-building, search and rescue, parks, and women's health and empowerment projects, breast cancer research, and youth athletics"
I pledge to make a similar donations if I do manage to produce a pair or two.