These envelopes are perfect for international mail. Strong, and the glue actually holds the envelope closed. No need to add tape.These are way better than standard paper envelopes since they are highly reusable. Ideal size for distributing cash tips to multiple employees. Easy to write on with a sharpie marker.This is the appropriate size envelope to match with "executive" paper stock. However, the commercial means that the quality of the paper isn't as nice. It fit for what I needed, but I might seek out a higher quality "monarch" envelope next time.I make “money” cards. I make a 3-fold card where you can give a $$$ gift. And this card is the perfect size for theJam envelope. I like the white and recycle color. So far have seen a green Ann blue but no red as yet. Well made and good quality paper is used.The adhesive is fair. I’ve had to add tape to them before. The material is almost waxy but a ball point pen or felt tip marker works. Just let it dry.Should have ordered self-sealing.Light small tear proof envelopesPerfect for holding a stack of receipts without tearing open. It's slightly longer than a regular business size envelope so it can fit a thicker stack of folded paper and since it's made of Tyvek it does not split open at the seams like cheap paper envelopes do.It is medieval and idiotically self defeating that an established company should not think to ensure their envelopes are Peel and seal in 2020.It would transform the product from throwaway garbage to a dominant winner with no competition.Management should simply be fired. InexcusableI gave it 1 star because 0 is not available.They are not self-adhesive peel and stick seals as described. You need to lick the envelope so not as secure as you may think.