SILIKOMART - Silicone Pastry Mat With Border 42 x 35 cm Silikomart. Made of silicone, this pastry mat will be of great assistance when you make your Christmas cakes rolled or Yule logs. Silicone mat with border features: The silicone plate size: 422 x 352 mm: 8 mm Suitable for cooking in the oven up to 230 °C and Freezer up to -70 °C.