Great harness for solo play or for couples. The harness fits very well and stays in place even during the hardest of rides. The only downside to this product is if you have bad knees. This product will not work well for solo play.

The Heeldo is an inventive toy that does what it is supposed to. You pull it on over your ankle, strap in your favorite o-ring compatible toy and use it to penetrate yourself (or a partner). It is comfortable to wear, and use for a long while (assuming your foot doesn't cramp). I really give this one an A+

The Heeldo basically has the concept going for it, and that's it. I would love to see this in a different material, more sizes (up to men's 13, please!), and I would like to see some better quality control. I love the direction the manufacturer is going in, but this product seems like it's in beta.