Where can i buy SHOE GOO so i can repair the soles of my nike sbs?

i hate wearing out the soles of my shoes because when they do they look like they are so uneven at the bottom. If anyone knows where i can buy this product "shoe goo" at any store or at least a website they specifically know, that would be very helpful.
Update: this is how this products looks like

http://www.emocs.com/conditioners/shoegoo.jpg
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