IGX

I've spent most of my adult life wearing either dress shoes or some sort of work boot and have a few foot and foot related issues that are still relatively mild. I picked up the Correct Toes toe spacers to help with these issues (I've had about half of the issues at one time or another the correct toes claim to help with). They claim to restore natural foot function and toe splay over time (see at about 4:20 here). I've used them for about a week.

They do stretch the toes out, and give you ability to get an even greater stretch between the big and second toe and the fourth and pinky toe. They fit as advertised but those with hobbit feet may need to go up an additional size. They're comfortable enough to wear and walk in bare feet, but probably wouldn't last long if you wore them outside. I primarily wear them over medium weight toe socks (which spreads the toes even more). The only shoes I own that I can wear them with is an old pair of Teva sandals-- wearing them with anything else gets painful pretty quickly. For the most part, I am stuck wearing them when I sleep and have noticed a difference in my toe splay in the mornings already. I can wear them overnight with no issues. Note-- I have not tried them in wrestling shoes or done cossack lunges while wearing them.

At some point I'll try athletic and casual shoes that I can wear these with and see what difference doing weight bearing exercise and activity makes. The website also has a lot of useful videos.
https://www.correcttoes.com/shop/correct-toes.html

So far I like them.