JAM Paper® Heavy Duty Tyvek Open End Catalog Envelopes are some of the strongest and sturdiest envelopes available. 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 insulate houses, so you can be assured the materials inside these envelopes will be well protected from the elements. The envelopes themselves, measure 10 x 13 inches and feature an open end flap with a self adhesive strip closure. They are lightweight, tear proof and water resistant, protecting documents from inclement weather, or accidental spills that can occur around the office. Use them for organizing or mailing important documents at school, home, the office, or out on the go. Indestructible Tyvek envelopes PROTECT WHAT'S INSIDE™, so if you are looking for that large heavy duty protective envelope, JAM Paper® Tyvek Catalog Envelopes are a great option!
I bought this for packing acceptance t-shirts for my school. the color is really quite nasty... the quality is great. Ended up not using them because of the color - had to run out to get plain white ones.
I just love the Tyvek envelopes that come in bright colors, the price is reasonable. I would be ordering all the time, but my problem is the postage coast is way to high. for $4.00 worth of envelops I paid approximately $14.00 for shipping. That shouldn't be.