KKBESTPACK 100 10x13 Blue Poly Mailers Self Sealing Shipping Envelopes Waterproof Postal Bags

I should have known better based on the price, but I so rarely purchase and receive anything that's so bad that I have to return it. I don't think that I'm lucky that way, just a savvy shopper. When I opened this packaged I could immediately tell how thin they were, compared to all other poly mailing bags I've ordered in the past. I grabbed the first bag in the pile to use it and quickly saw that there was a hole in the bottom. After inspecting further, there's holes in many of the bags, including the inner bag they came in. Based on the sealing on the sides of the bags it would appear that they are homemade - several even have holes in the middle where it appears they were 'burnt' during the home-sealing process. Even though many bags did not have holes, I would never trust mailing anything in them because they are so thin, which is why I have no choice but to return them. I wouldn't even trust mailing these bags back in one of these bags! But maybe I should.....

I have a stock pile of these for eBay, Poshmark and Mercari orders because they are a great quality. The amount revived for the price paid is very worth it to me. They are very durable and have survived shipping items to Hawaii without so much as a puncture. Definitely a staple piece in my home office

I got the cheapest ones this time. guess you get what you pay for. Almost all of these have marks on them like this, possibly damaged. The parts where the markings are have creases. Some more than others. Decided not to return bc I run an online boutique and have items I need to ship ASAP so making due with these. I hope they hold up. I regret this purchase. Don't think it makes my biz look very good either.

I buy I bought these in September 2021. I sell online and ship 20-30 polymailers a day.These are the first bags i have purchased that I am not satisfied with.Bags RIP at seams just in opening to place item inside. Maybe seams not sealed correctly. Adhesion sticks to tab you pull, adhesive is not smooth it's chucky with raised like sand particles but it's adhesive. Bags are thin, i have continued to use these. But i pre bag items before placing in these bags. I also have to tape to secure seams and closure.I would not purchase these again, however i will continue to use these until gone.

The bags seem sturdy enough for what I use them for- mailing small articles of clothing for eBay purchases. I have no idea how they might hold up for bigger, "clunkier" items. The edge of the seal of each bag was "mottled", as if the inking of the bag missed spots in the coloring process. Also, when a piece of adhesive tape just lightly touched the bag and I pulled it to reposition, the pink ink was sttuck on the tape. As far as adhesion- it could be much better. The glue strip needs to be wider and thicker. I need to use scotch tape to make sure that my bags are adequately sealed before I mail them. I probably will try another brand when I need to buy bags again.

As with anything I buy on Amazon I'm a little nervous of the quality. When these came first thing I did was test them by sealing it and trying to rip it open, well I was surprised! These are thin but don't let that fool u the tape on these is the strongest I've bought yet, and as far as tearing u would really have to work to get into them. Highly recommend if u need poly bags will most definitely buy again!!

The mailers work fine for what they're meant to and the seal is sticky enough, as long as you only ship lightweight items in them - otherwise, they will start to tear if there's too much weight in them (I used them for shipping clothing). However, adhesive labels will NOT stick to them. I tried using my Avery labels on them, but they were able to be easily pulled right back off, and I ended up having to tape the sides down. So if you only ship lightweight items and plan on using regular paper-labels/shipping tape, these should work fine.

The media could not be loaded.  Tested durability while they feel flimsy they definitely aren’t! I stretched it, prodded it and tried my best to tear a hole. Using about 80% of my strength I finally was able to tear a hole, nevertheless the bag held up amazing! Such strong adhesion and strength in such a small bag. Overall impressed and will buy again. Video attached to help you understand the durability. Note while I managed to get a hole in it I did try previously off camera so it really holds up!

I ordered these poly mailers to send out trials of consumable products and the smell of chemicals is so overpowering, there is no way they can be used for anything that is to be ingested.Very strong solvent like odour that ended up giving me a headache.If you’re using these for anything that may absorb odours, think again.

Las bolsas son sumamente resistentes, es sencillo retirar la protección del adhesivo para el sellado y le caven 3 playeras XL a cada bolsa.Lamentablemente tanto FedEx como Estafeta tienen una política que prohíbe el uso de bolsas de color negro por lo que tuve que comprar bolsas de otro color para estas mensajerías.

I sell quite a bit online, these are perfect for shipping my knitted items. There is no padding but they are very strong and seal very well. They keep everything clean and dry. I've never had one rip open during shipping, everything always arrives perfect.

The durability of these bags are not good, it’s very cheap and almost hard plastic like. Instantly ripped when I put a small shirt in there.The colour is not hot pink , more like a dusty pink.I’m scared to use these as shipping bags as I intended to because it may rip and leave my packages damaged

Absolutely love these bags! I use them for my small business and their great!!