The team at San Francisco’s new Rickshaw Bagworks have taken a page from the Schoolhouse Rock hit “My Hero Zero” with a bag they’ve optimized to reduce wasted fabric. The ZERO shoulder bag is available in four sizes, each constructed from a single piece of material patterned in rectangles. The Timbuk2 alums who founded the company say that eliminating scraps brings the cost of their made-to-order bags down. At $40 to $70 for the different ZERO sizes, we have to agree that what’s good for the environment is also easier on the pocketbook. Since opening their factory in SF’s Dogpatch they’ve created messenger bags for attendees at this year’s TED and Social Capital Markets conferences. If minimizing a manufacturing supply chain footprint doesn’t sound very visual, that’s only because you haven’t checked out the eye candy on the Rickshaw Flickr stream.