I cut 4 finger of a cotton hand gloves the thumb part remains, wear it in my feet with the thumb part into the toe of my feet. wrap two layer of duct tape around the balls of feet. works really well if your running on rough hot hot asphalt. barefoot feel is almost 100%. Id been putting mileage on it. really great. duct tape is not even torn. Ill show picture when I get a chance. use a hand gloves that is elastic on the wrist part so it get a good fit, the palm part should fall on the ball part of our feet. you can make a spare for use on long run. Its basically a hand gloves wear it in your feet instead, cut the extra length on the finger, wrap around two or 3 layers of duct tape along balls of feet, elastic part of the hand gloves will give it a good snug fit. looks like a VFF thats cut in the middle and open in the front for good ventilation. Duct tape is to prevent making hole under the balls.
I make extra pair today and give it to someone running in shoes in the middle of our group long run, works really well for her being her first barefoot run. Her red nail polish showing, really stylish, next time Ill look for pink duct tape for colorful look. My first barefoot convert.