I don't know if you would be interested in this but I use Asiana Candy vacuum bags. They are heavy duty zip lock and reusable and have a flat one way valve on them that you use a hand vacuum pump on to draw out the air. I use them to cook Sous Vide and they draw out every bit as mush air as an electric vacuum pump. I also use them to vacuum pack my game and fish. It may take a little longer but the end result is just as good. They also sell hand held small battery operated vacuum pumps for these bags.