●Gray Mat 600 Size: A4 (11.6 x 8.3 inches (297 x 210 mm); Thickness: Approx. 0.04 inches (0.9 mm); Weight: Approx. 1.5 oz (42 g); Number of Sheets: 20 ●Put in a tear-resistant CPP bag (transparent) ●There are 3 types of thickness (350, 600, 800), and 2 sizes (A4, A5)