 It's biodegradable. It can be fed like a car from the 50s. You can call it leather food, but you can put that right in the leather and bring the luster back. It'll last for decades, for centuries. But plastic leather does not. The sun hits it. It starts to make it brittle with age. It gets hardened. Just like if you have an old pair of sneakers and you think, wow, this doesn't grip anymore. You have that rubbery grip.