It takes a long time to wear out a Birkenstock, a favorite sandal of Boomers (with or without socks). Here's a comparison of a new pair to an old pair worn daily
Mephisto Vs. Birkenstock: Which Ones To Choose?
Birkenstock vs. Mephisto vs. Crocs vs. Naot Sandals: Which is the Best Option? - Extrabux