Great picnic blanket and travel bag

If you have a family, you need one of these waterproof picnic blanket

I know a lot of families already have similar picnic blanket type, but how many do you find that also double as a duffel bag?my family has been using this for a couple weeks now as an indoor and outdoor play mat, picnic blanket, beach blanket,camping blanket and a shelter when we were caught in the rain at a softball game