Purchased to mail invitations for a travel-themed wedding. Got a lot of compliments on the overall invite and envelope that was well suited. These are not security envelopes, so the contents within can be somewhat discernable. Would absolutely purchase again. My only suggestion is to ensure you place your return label on the front left corner rather than on the back of the envelope. There were a few guests who nearly mistook the envelope for junk mail rather than a formal invitation. Haven't had any issues mailing within the US.Just as advertisedVery high quality envelopes. Premium printing, colors are crisp, and borders are symmetrical. Paper used has a good feel and weight to it. Bought these after receiving multiple low quality air mail envelopes from mead. My only issue with the envelopes is that the Airmail etiquette should be printed in the lower left corner instead of the right side. That way it is not in the way of where postage is applied. Overall a great product and far above other airmail envelopes out there. Photos compare JAM on the bottom and Mead on top. The difference in quality is painfully obvious. Go with JAM and you won’t get burned like I did.Airmail envelopes are designed to be as light and sturdy as possible. They have to not only stand up to traveling from you to their destination, but they must not contribute too much weight to your letter. You want to save your weight for the onion skin pages you are loading into the envelope and spend it on postage for the envelope itself.They are not very lightweight, but not heavy weight either. I understand why you would want lightweight envelopes to stay within single postage stamp/airmail threshold ounces. These weigh about .2 oz each, which is not that much greater .1-.6 oz less than the super thing ones. I would rate these 5 stars due to the quality of the paper used to make them. They are robust, and will not reveal the contents inside like other thin envelopes where correspondence shows underneath the envelope. I would whole-heartedly recommend these.I bought these for my son’s airplane themed birthday party and they aligned perfectly. Quality and price were great. Only downside was I had to cover each envelope’s airmail imprint. I would use preferred this to go towards the bottom or the back but other than that imprint this is a great product.I got these cause the Mead brand ones look like ass (the ones on the right is the Mead brand).Classic Air Mail style. Used to send Air Mail & provide Air Mail Receipt of Ham Radio QSL (CONFIRMATORY Ham Radio 2-way contacts) Cards from Ham Radio Contacts across the world. I provide a Self Addressed Air Mail envelopes which becomes a “collector item” when returned with foreign stamp & dated postmark.