JAM Paper recycled brown kraft open end catalog envelopes are made out of earth-friendly, 100% recycled 28lb paper! These envelopes measure a large 10" x 13" in size and feature commercial style flaps. To keep items secure in the mail, each of these envelopes features a reliable gum closure. Their size makes them ideal for enclosing standard and slightly larger sized documents without folding or creases! With their natural color and quality design, these envelopes have a both rustic and professional look that makes them great for all kinds of home and office mailing needs!Details:Brown kraft10" x 13" envelope size28 lb. weightAvailable in multiple counts100% recycled paper