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Your cart is empty. Make your busy mail campaigns a success with our high-density Tyvek First Class white self sealing envelopes.
Hard to tear and puncture-proof, our lightweight 10x13 Tyvek envelopes aren’t easy to tamper with! The green diamond border and First Class Mail printed in clear letters will make sure to get your deliveries noticed, while the moisture-proof, sturdy material helps protect the contents inside. The self-seal strip with strong adhesive makes them a reliable choice for securely delivering even the most sensitive official notices.
From postcards and photos to letters and large documents, our catalog mailers are versatile enough to fit flat items measuring 10x13 inches or less, or larger foldable paperwork. With 15 envelopes in each pack, you’ll have plenty for your mailing needs with a single purchase.
Mark Price
2025-08-17 18:22:18
I like the durability of tyvek envelopes but fund them difficult to get in relatively small quantities for home use. Very happy with these.
E. mcentee
2025-07-29 12:56:47
Who invented Tyvek? It’s a bit miraculous. You can mail pointy things and the envelopes are so sturdy. But because the material is so light you arent squandering your allowance on extra stamps to pay for heavy bulky cardboard. The self stick is nice and sticky. Id buy this product again.
cjm
2025-05-29 11:36:18
Haven't even had a chance to use these yet but Amazon wants a review! I can only say the price was right and they arrived on time in fine condition.Update: I've used one and found it to be good quality. I was able to fit more than fifty pages of copy paper in the envelope easily with room for more. The price was very good and I'm very happy with the product.
Robert P
2025-05-26 15:46:55
Use these for document storage. Nice size for computer paper, etc. As described and on Time.
James Baxter
2025-03-03 14:30:30
We had sharp boxes to mail and we put them in envelopes and they made it ok. No holes in envelopes and boxes did not get crushed!
Constance-NH
2025-02-13 21:12:07
These heavy-duty envelopes are great for mailing things you care about and want to arrive safely.
Monica Polikoff
2024-12-26 16:15:20
The right amount of letter-size envelopes for personal use.
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