Staples Gummed White Catalogue Envelopes - 10" x 13" - 100 PackWhether you're sending important paperwork to a client, passing out presentation materials or submitting a project for class, these Staples Catalogue Envelopes ensure your documents are organized and protected. Measuring 10" x 13", these envelopes hold stacks of letter sized documents and are made from opaque white kraft paper for a crisp, professional finish. They also feature overlapping centre and bottom seams for extra strength and durability and