JAM PAPER #11 Recycled Envelopes - 4 1/2 x 10 3/8 - Brown Kraft Manila - 25/Pack Color: Brown Kraft Size: #11 (4.5 x 10.38 inches) Quantity: 25 /pack Features a straight flap with gummed closure and smooth paper finish. Perfect for personal mail, business mailings, greeting cards, announcements, and so much more!