We recently came across a new line of reusable shopping bags by RuMe (ReUseMe).  These bags offer some cool benefits:
*first, they have great designs
*they come in nice complimentary sets
*highly durable for those heavy loads
*they compact into easy-to-carry sizes that fit into your coat or purse
*easy to clean and water resistant
*handles are long enough that you can throw the bags over your shoulder (make sure you balance sides to avoid scoliosis conditions!)

This is an American company that outsources there production to South Korea, but utilizes employment methods that insure fair trade practices.

If you are looking to boost your green efforts with some style and functionality, check them out:

http://www.rumebags.com