What's in those small packets found on new stuff?

Question

I was just wondering what are those small round crystals found inside the small packets that they put on new shoes or handbags and on many other items.

Answer 1

http://www.kanaccasbags.com/home.php?cat...

Answer 2

It's silica gel, it soaks up moisture so things don't get damaged or musty.  

Answer 3

Here is what an OEM has to say about their product.