The Original sandal by Nomadic State of Mind, given countless nicknames over the past few decades, mostly due to its seemingly ancient appearance. The adjustable backstrap makes it a convertible sandal of sorts; either using the back strap for a heel strap or over top the foot to make the sandal a slide. 

Fashionable? Sustainable? Comfortable? I think the sandal speaks for itself if its in your vibe.  The most color options are available on this model.