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

I use these for my Etsy shop. I thought the value/cost was great and I love the Kraft look of them. They seal and stay sealed well. Perfect size for up to 5x7 prints, cards or photos. They have good thickness and I don’t have to add extra backing boards, the mailer is enough alone. I’ve not had a single order damaged so far. Would recommend and purchase again.

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.

I bought these for my small business about 2 months ago and began to notice that the adhesive is horrible on these. They kept opening after sitting for a short amount of time and I've even had them open and cause product to get lost during shipping. I now have to use packaging tape to seal and prevent the mailer from opening. Stay away from these mailers!!

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.

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.

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.

As far as thickness, rigidness, and durability, these are great. I use them to ship out custom watercolor pet portraits. I've never had one bent or arrive damaged when using these envelopes. However, the adhesive is seriously inadequate. Every single envelope pops open as soon as I seal it. I have to apply a heavy, strong strip of packing tape across the flap to keep it from opening before or during shipment. That is an enormous quality flaw that needs to be addressed. Until it's fixed, I won't be buying these again.

I use these often for my business where the items shouldn't be bent. These have been holding up fairly well but I have had just a few adhesion issues. Pull the strip and firmly press the adhesion on but I have had a few pop back up. Other than that, useful for what I need it for.

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.