The best grocery sack in the world

Yes, the Japanese have the best reuseable grocery sack.  You may not have even known that you need the features in this grocery sack:

1. It folds into a very neat square that you can tuck into your purse or briefcase
   
2. A snap to keep things in the bag
3. A pocket for your wine bottle (of course, the store will also cradle the bottle in its own foam fishnet sleeve)
4. A small inner pocket for your money, in case you are doing the grocery store run
5. Super strong handles and construction because you WILL be walking those groceries home for several blocks