Enjoy the great outdoors with this premium, family-sized picnic blanket. Extra Large Picnic Blanket – Waterproof Backing – 200 x 200cm. 1 x Extra Large Picnic Blanket (Blue/White Checkered). • Easy to Clean: The waterproof backing is easy to wipe clean with a damp cloth, and the top layer can be shaken out to remove crumbs or sand.