This one has been so entirely on my wishlist. It’s a bag, yes. But it’s handmade by a company called Van Hulley (check vanhulley.com - it’s in Dutch, though) from the original sails of the #Ecolution, the ship by the late, former Dutch astronaut and scientist Wubbo Ockels.
Ockels spent a large deal of his life in sustainable innovations, including this ship: a sailing yacht that could preserve its own energy by storing it in batteries so it would never have to use its engines (only in cases of emergency).
More information on Ockels (English) on https://en.m.wikipedia.org/wiki/Wubbo_Ockels. Information about the Ecolution (Dutch): https://nl.m.wikipedia.org/wiki/Ecolution_(schip,_2010)