Pack of 32 8x10 BLACK/BLACK Double Mats Mattes for 5x7 photo with White Core Bevel Cut + Backing + Bags Set of 32 pieces of 8x10 Black over Black double Picture Mats for 5x7 Photo with backing boards and bags This item comes with the 32 double mats, 32 backing boards and 32 clear bags. The opening size is 4.5"x6.5" for 5x7 print. Color: Black over Black with white core The mats are beveled cut with white core and 4-ply thick (about 1.4 mm or 1/16 inch),double mat is two 4-ply mats. The backing is white on both side. The re-sealable adhesive strip of the clear bag is below the opening of the bag instead of on the flap.