JAM Paper #9 White Tyvek Tear-Proof Envelopes ensure your mail is well-protected! Made from high-quality Tyvek material, they're so durable that they can resist water damage and rips. They'll be terrific to use for sending out those important letters of yours, as well as documents, checks, billing statements and much more. These white business envelopes measure 3 7/8" x 8 7/8" and contain a smooth texture. They're also built lightweight and composed of 10% recycled content! Each one features a booklet opening and commercial gummed flap, which securely encloses the envelope. This pack carries 25 envelopes, a great supply to store at home or the office!Details:White3.875" x 8.875"Tear- and waterproofBooklet openingCommercial gummed flap25 envelopes10% recycled Tyvek