I'm looking for this item...saves space in your closet?

You can put comforter, quilts or thick or bunch of clothes and you vacuum the air out so it flattens. Then you can store that in your closet and it saves a lot of space. I saw this in an adervertise along time ago, but wondering if I they sell that at the store? Does anyone know what it's called and where I can buy it from? Thanks.