I remember when these were super-popular in the health food community... in the same era when carob was "in." https://modernfarmer.com/2022/04/the-luffa-farm/
@estherschindler Birkenstocks only came in brown, only at the health food store and were an outrageous $35.00
@estherschindler me too, but working at the health food store helped ☺️