In case anyone's looking for the Bento box, Nashbar has a knock off version here described as a Nashbar Goodie Stasher. It's a bit hard to find since it doesn't appear in their listings under bags. Currently it's being offered at $5.99.

Dimensions are given as 5" long x 3 1/2" tall x 1 1/2 wide which are comparable to the large Bento box.