JAM Paper® Chocolate Brown 100% Recycled #10 Open End Policy Envelopes measure 4 1/8 x 9 1/2 inches in size and are made out of 100% recycled 28lb paper. These straight flap, open end envelopes are sold in packs of 25. These envelopes feature a professional, dark brown chocolate color that looks both luxurious and enticing in the mailboxes of their recipients. The size and shape of these envelopes makes them ideal for receipts, sales slips, invoices, tickets, folded documents, and more. Each of these envelopes also features a reliable gum closure to keep items secure as they make their journey through the mail.