JAM Paper® Smoke Grey Letter Booklet Plastic Envelopes with Hook & Loop Closure are 9.75 x 13 inches in size and have a 1-inch expansion. In this pack of 12, each envelope has a straight flap opening and a certified Hook & Loop closure that ensures your envelopes stay tightly closed and that they can be easily opened. Their pliable yet sturdy plastic material will reliably protect your documents against bending, tearing, crumpling and other damage. Because of their size, these envelopes are perfect for both standard sized documents and small office supplies, such as pens and markers. Their multipurpose grey color makes them appropriate for both casual and professional settings. Keep your documents protected in storage and while you are transporting them from place to place with these smoky envelopes.