Yens® Poly Mailers 100pk ENVELOPES SHIPPING BAGS Self-seal Poly Mailers. Tear-proof, Water-resistant and Postage-saving Lightweight Plastic Shipping Envelopes (M5:12X15.5)

I purchased the 14.5x19 size shipping bags made by Yens Poly Mailers. These are are excellent quality bags. I'd rank them up there is strength and durability. The price was very good per piece. And, the 100 quantity that these were available made the cost much lower while getting twice as many bags than most other sellers selling 50 quantity. I spent some time weighing out the many options available for this size or close to this size bag to find the best deal. And, these made by Yens Poly Mailers were the best value at the time of purchase.The peel-off tape is very strong, and it holds very, very well the bag closed even when the bag is stuffed full. I do recommend these bags for shipping. I use them for shipping clothing. The plastic is thick enough to handle in-transit scuffing and rubbing, and it is light enough to not increase the shipping weight too much versus using a cardboard box.If you can find these at a good price, go for it. These are really good shipping bags. I have Amazon Prime, so the 2-day Free Shipping is very nice. Make sure you weigh out all you options as pricing changes a lot with these type of bags from different sellers and with their supply.

I have been using these Yens Poly Mailers 100pk ENVELOPES Shipping Bags Self-Seal Poly Mailers. Tear-Proof, Water-Resistant and Postage-Saving Lightweight Plastic Shipping Envelopes (M3:9X12) for years! They are price friendly and come in various sizes. I have never had a problem with them getting wet or tearing open. They are super durable and lightweight. I sell hats at Etsy at they fit perfectly in this 9x12 size poly mailer.

Love, love, love these bags - they've really allowed me to grow the family business without constant worry over resilient package/mailers. I just can't imagine trying to do it without them. I also use the USPS tyvek mailers & these are just as tough. They have a nice stretch, but are tough enough that I've been able to wrap books in cardboard & mail them in the shipping bags. Just fantastic & they save my clients money on shipping as they only weigh .3 oz each! Do yourself a favor & make your shipping easier - go buy the bags!

Excellent for the price! These are not as durable as the Fedex style paks--not the same material. Those feel like they have an almost papery quality, but these are definitely just plastic so also a little flimsy when packing. For the price, these are a great buy and about what I was expecting. Just don't buy these expecting them to be like FedexPaks (not sure what material that would be called).For most things, I believe these do the trick; if shipping something a little heavier or with sharp edges, I double up the packaging with two bags.So far, everything has arrived safe and sound!

I ship a lot of things out that I sell online in resale apps and they are great, much better price to but in bulk than singles at the store. Pretty thin material but doesn’t rip easily and good for sending non-fragile items. Awesome value for the price

The poly bags work great for our shipping needs. We ship out lots of golf polo shirts and these poly bags don't have any dust or power residue inside of them. Some poly bags we have bought in the past from other sellers have had that problem. We can throw the shirt in the bag without "prebagging it" and our customers are happy with the condition they arrive in. They hold up well for the USPS postal service and help us save on shipping because they are light weight.

These are perfect for some of the larger items that I embroider and sell in my boutique. They seem a BIT thin to me, but I have never had a problem with them breaking or busting. However I do sell light items like fabric and clothing, so if you're selling something heavy or with sharp edges you may want to find something a bit sturdier.

I sell quite a bit on Depop and these have come in handy! Super basic shipping poly-mailers, but they get the job done. I have never had any complaints from any buyers of the bags/items arriving damaged thus far.