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

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 LOVE this product and will continue to buy these! They fit perfectly in the envelopes I use to ship out my stickers and helps to protect my products. My customers really appreciate them as well! Highly recommended!

Arrived in perfect condition! This was packaged with care, it came in a very clean package. It is very sturdy cardboard. I would recommend this product for shipping.

Perfect thickness for my postcard shipping needs.

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.

Insert for mailing flash drives

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.

This is hands down the best to pack prints. They are thick and sturdy and keep prints safe when shipping out to my customers. I recommend these backing boards. They are true to size and come safely packed.

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!