5,500 year old leather shoe

"It is astonishing," Blahnik said via email, "how much this shoe resembles a modern shoe!"
We have a 2010 addition to our collection of ridiculous discoveries. This time we are presented with a "5,500 year old" leather shoe with (I assume) some 5,500 year old grass in it.

By the way, what's the scientific version of the life span for the most durable leather?



KD: How old could this shoe possibly be?