The URI Mapping module is a very handy module that no Zen Cart site should be without!
It's quick and easy to create URIs for your products/categories/EZ-pages.
Improve your rankings in search engines and give potential customers easy to remember/enter URIs.
Use Static URIs to Make Web Addresses Easier To Remember and Easier To Enter. Improve your Rankings in Search Engines!
For example - for a product - instead of dynamic URIs like this:
A static address, full of keywords, could be specified for the product: