Top Flight Clasp Envelopes, Gummed and Clasped Closure, 10 x 13 Inches, Brown Kraft, 8 Envelopes per Pack (6911068) Go to amazon.com Related posts Top 10 recommendation manila envelopes for 2022 Feature10 x 13 InchesSturdy 24 pound paper stockBrown kraft envelopesClasp closure8 per pack DescriptionEnvelopes open and close with a metallic clasp, as well as adhesive gumming. Heavy 24 pound paper.