US Art Supply Art Mats Acid-Free Pre-Cut 5x7 White Picture Mat Matte Sets. Includes a Pack of 25 White Core Bevel Cut Mattes for 4x6 Photos， Pack of 25 Backers &amp; 25 Clear Sleeves Bags<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Set of 25 pieces of 5x7 Picture Mattes for 4x6 Photos with 25 backing boards and 25 crystal clear sleeve folding flap bags. </span></li><li><span class="a-list-item"> Art Mats™ Brand Premium High Quality Acid-Free Mattes， Backers &amp; Plastic Sleeve's </span></li><li><span class="a-list-item"> The opening size is 3.5"x5.5" for 4x6 photo prints. Color: White </span></li><li><span class="a-list-item"> The mats are beveled cut with white core and 4-ply thick (about 1.4 mm or 1/16 inch)， The backing is white on both sides. </span></li><li><span class="a-list-item"> The set is professionally Packed and Boxed to Assure that All Precautions have been made for a Save Arrival of your purchase. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31jr1KKXvEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BRPNXCoFL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31%2BoaE9y5CL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31T1OzIFWoL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41jXftLcb7L.jpg" noproxy>