200 Pack 5x7 Corrugated Cardboard Sheets for Mailers, Flat Packaging Inserts for Shipping, Mailing, Arts and Crafts Supplies, Dividers, DIY Projects, 2mm Thickness

I think most people mistakenly think the thicker the cardboard, the sturdier it is. However, these inserts are thin yet much sturdier than the thicker board I previously used. Ive purchased them three times now and all have been in great condition. As far as size, they measure exactly 5x7.

I needed to use these to send small sized magazines in the mail. I taped two together side by side for a little bit larger surface area and they held up to keep the bubble mailer with the magazine sturdy and unbendable.

Durable and easy to assemble

I used these for my business and mail stickers in between. Since I started using these, I havent had any issues with mail bending. These are thicker than I thought!

Great price light weight but very strong. These inserts are thing but incredibly strong, They also do NOT come bound by strapping which always causes damage. Will buy from again!

Super good quality and perfect for adding backing for flimsy envelopes Package came in a neat stack, easy for storage Fits perfectly in my A7 envelopes and match the kraft paper

Perfect for my shipping needs!!

Packaging was hilarious a clear bag of cardboard showed up at my doorstep lol. Using these for my small business to ship prints. They are super sturdy! Great alternative to chipboard.

As ridiculous as it may sound, I am so impressed and excited about this cardboard! It is not your standard cardboard that bends or dents easily. It is incredibly strong yet thin, not sure how that works but it does! I wish I had discovered these sooner. Highly recommend.

These were exactly what I was needing for packaging art prints. Great value for the money. I will 100% be buying more in the near future!