Package included：This item comes with 25 8x10 white mats, 25 backing, and 25 clear bags. Size：White frame mats size 8x10 inch with opening size 4.8x6.8 inches for 5x7 inches Pictures. About 1.2 mm thickness, the backing is cream white and front is white.(This item doesn’t include prints picture.) Acid Free：Long life, long-term decorate your frame and not jam yellow. Protect Art and Photography: Protection for matted prints, photos, and other artworks from dirt and dust. The art picture mat kits- Perfect DIY gifts for friends or families. Worry-free After-sale: Egofine has been committed to providing customers with high-quality products and customer services,If you are not satisfied with the product or have any problem in use, please freely contact us, we’ll do everything we can to make it right. Pack of 25 White Pre-Cut 8x10 Picture Mat for 5x7 Photo with White Core Bevel Cut Mattes Sets. Includes 25 High Premier Acid Free Mats & 25 Backing Board & 25 Clear Bags