text:  Returning to our membranes. So we have this forward osmosis system, right, where just by osmotic pressure, the water travels via this membrane into the salt solution. And then from that salt solution, we then do need battery power to pass it through another membrane to get rid of that salt, at which point that filtered water then returns to an in-suit drinking bag. Currently, astronauts do have an in-suit drinking bag. It contains less than a liter of water to drink for transport.