JAM Paper Tyvek Envelopes, #11, 4 1/2 x 10 3/8, White, 1000 Pack VariesBy:envelope_colour_17838:White|envelope_size_8174:4-1/2" x 10-3/8"|envelope_pack_size_1000101:1000 Pack JAM Paper Gray #10 Business

JAM Paper Gray #10 Business Envelopes get the job done

Each individually-boxed roll measures 19 mm x 32

Unlike the standard white envelope

Replacement straps available

Colorful envelopes are a fun way to let your mail stand out from the pack

JAM Paper Tyvek Envelopes, #11, 4 1/2 x 10 3/8, White, 1000 Pack VariesBy:envelope_colour_17838:White|envelope_size_8174:4-1/2" x 10-3/8"|envelope_pack_size_1000101:1000 Pack JAM Paper Gray #10 BusinessJAM Paper Heavy Duty Tyvek Envelopes are some of the strongest and sturdiest envelopes available. Tyvek is a registered trademark of DuPont, the established chemical company responsible for developing this durable polymer. Tyvek is composed of high density polyethylene fibers, a synthetic material that is extremely hard to rip and tear. This type of material is the same used to build and insulate houses, so you can be assured the materials inside