Ask HN: Why is my 100M Nautica Voyage Eau de Toilette glass bottle unbreakable?

I accidentally discovered this when I accidentally dropped it from a high table onto a hard tile floor.

Since then I thrown it on the floor multiple times without even it sustaining even a little chip.

Any explanation? Why would a cheap bottle of perfume be this unusually strong, when I've looking for cookware and drink-ware that is even half as strong without success?