Tupperware Pastry Pie and Tart Pastry Sheet Rolling Mat No. 3899 and Rolling Pin. Vintage from 1977. You receive both items, pin and sheet. The Pastry Sheet rolls to store. To make baking a pleasure, tupperware made this mat so that its top releases dough easily, and the bottom grips the counter. Mat feels like silicone, but not marked. Mat features standard and metric measures. EUC. Mat measures 22'x18". Practical baking use, or hang both in a shadow box for unusual, collectible vintage kitchen decor. Great set!