This is the wonderful Bosal double sided fusible In-R-Form that is used in the construction of the felted woven wool version of the Wall Pocket pattern http://www.designandbemary.com/products/wall-pocket/  If you have already made one, or have made the faux birch bark version and want to try the woven wool model, this is your opportunity to get 2 pieces of the In-R-Form. Each piece is about 18-19″ square and each piece will make a wall pocket.