Well-known in design circles and on blogs for its folded polypropylene backpack and unusual iPad cover, Solid Gray looks to fill the gap in the mobile boom box market with its speaker-outfitted backpack, dubbed the Basspack. Currently just a working prototype, the collaboration with Case of Bass adds boombastic sound to the geometric backpack design. No word yet on availability or audio specs, but the very idea of it makes designophile music fans giddy, but their neighbors? Perhaps not so much.

Get more info at Solid Gray online.