Looking for shoes like these, they’re ridiculously flexible and comfortable

Hello, I’ve had a pair of shoes like the ones above since high school and I love them, the only problem is that I’ve never been able to find anything like them. The thing I love most about them is the sole, because I can pretty much fold the shoe in half without strain or consequence, which has made it probably the most comfortable shoe I own. Mine are getting pretty worn now and I’ve recently discovered that apparently I’ve been wearing shoes 3 sizes too big.