JAM Paper #10 Tyvek Business Tear-Proof Envelopes, 4.125 x 9.5, White, 500/Box (2131077D)

JAM Paper® White #10 Business Tyvek® Envelopes measure 4 1/8 x 9 1/2 inches each and feature a versatile bright white color. This box contains an even total of 500 envelopes. Each one is made out of out of smooth, durable, tear-proof, 10% recycled Tyvek material. Tyvek is a registered trademark of DuPont, the established chemical company responsible for developing this durable polymer. Each one of these high quality envelopes features a commercial flap style opening and a reliable self-adhesive strip, peel-and-seal closure! If you have need to send a letter or important paperwork through the mail while keeping it safe from the weather, these envelopes are perfect for you.