100 Pack Rigid Mailers 6x8 - Sturdy 450 GSM Self-Adhesive Kraft Paper Cardboard Envelopes for Mailing Photo, Documents, Gift Cards, CDs, Art Prints

There are a lot of "rigid" mailers out there but these are very thick and very sturdy. If you are mailing cards or other paper products, these are going to give you the best chance of no bending from the mail people. I have also ordered the cheaper ones but they are flimsy and require you to add a cardboard insert anyway so it ends up coming out to the same price as these sturdier ones. These also look more professional, if you are using for business.

These mailers are perfect for shipping my Amazon Handmade Greeting Cards. The 6 by 8 inches is perfect for my 5x7 cards. There is just enough room for the cards and a plastic protective sleeve. They are as sturdy as the mailers used by a well known printing company. They shouldn't bend in transport. I shopped around a lot and you can't beat these for quality and price. I highly recommend these mailers.

Bad adhesive :( Was very excited to use because the sturdiness of the mailer was just what I had been looking for, but once I had it all packaged up and ready to ship, I noticed the backing had opened up. So the sturdiness is great, just bad adhesive.

my favorite rigid mailers, great quality and super reasonably priced. i've purchased this several times now over many other brands and these are just the right amount of thickness/weight (not too flimsy, but not so heavyweight that it throws your oz over the threshold and sturdy enough to keep your flat prints etc intact) some reviews mention the adhesive which to be fair does require some hard pressing. but if you're using 4x6 labels you can just attach them to the opening side and press them over the seal for security--and voila! no extra tape needed.

These are sturdy and the seal works well. It protects what I’m shipping. I use these specifically to send sports cards using eBay’s standard envelope option and have had no issues. I always select the 3 oz option and haven’t had any returned as non machineable. I hear it does depend on your post office, so you may want to check with your local post office, first. I leave mine for my postman to pickup or use the drive up and drop off option and haven’t had any returned or any issues so far.

The sticky strip does not hold the flap down!! I've shipped so many orders out this holiday season and i wonder how many arrived opened! I noticed the other day, while shipping orders, some flaps were lifting up, and after seeing all the other reviews i can conclude it's not just me. I gave it 2 stars because they are rigid, but you'll need to secure them with tape, which sucks because I bought these to lower the amount of steps to my shipping process, & that adds more work.

I have used these for sending orders of tags and stickers. Sometimes the envelope has popped open after it was sealed. Not good! What I do like is the thickness and rigidity of the envelopes. Please make the adhesive stronger!

These are good for mailing prints. Rigid. Stiff. Perfect size for art prints. The only problem is that the sticky strip does not seal and the envelope comes undone. Some of my customers had their prints damaged during mailing. So if you buy these, tape them shut just in case.

I am beyond pleased with these! I wish I had found them sooner.

The material used is borderline too think. It is barely useable as a rigid mailer. I ship archery bow strings and I have to use additional cardboard to make me feel confident. I won't buy this again

The glue didn’t hold closed even with a sticker on it. I need to tape them all. I’m scared about the ones I sent out without extra tape.