Designed to be worn inside the shoe..very comfortable, I've ran trails with this when recovering from a sprain.
Medspec ASO EVO Ankle stabilizer, size mens Medium, 2 available, one used twice, the other brand new. $35 each is under half of what I paid, take em both for $60. Located near Lamont
I did a lot of research before I bought, usability and comfort for running being priorities. I bought 2 thinking I'd use them on both feet to avoid imbalance and compensation but only ended up using one, just a few times. These are quality, made in the US.