I like how easy to release it is if it gets dug right in. Should be good for another several years I thought moving up from the k70 would be aan upgraadde but its aa nightmaare. Additionally, theres a 1/2" gusset proximal to the elastic bands. I bought these sandals June 17, of this year. But, this is my daughter in law?s favorite color right now. I bought a pair for my wife that can wear out slippers in no time. They are also thicker than cotton rounds but not too thick. However, the hook of the velcro is positioned far lower such that the variable ajustments are not possible. I keep cedar shoe trees in all of my shoes which adds a significant amount of weight to each shoe and still it?s very sturdy.