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

It is for sure sturdy and it’s not thick which is what I like I needed small for journals! If you are expecting it to be big it is not for you or if you want it thick! But I love it so much !!!

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 are absolutely fabulous for mounting 5x7 magnet sheets onto and storing craft dies! Great quality cardboard, clean and smooth, as well as packaged beautifully! Will order again as soon as I fill up all the sheets in my first order!

We use these in our store bags for support and product dividers. They work great and wish we would have found them several months ago.

I’ve ordered custom cut corrugated cardboard before, and the quality of this product far outshines even that. These are thin but still incredibly sturdy and hard to bend! And just as a FYI, i would NOT recommend people placing these inside envelopes or flats, since these board are so stiff that your letter will be non machinable by postal services. Since letters and flats are required to have a certain percentage of give/bend-ability, your letters may very well arrive to someone bent and at worst case destroyed. ** parcels/packages/bubble mailers are okay though **

I really love these for adding to items to mail to help keep them flat. However, the last batch I ordered is very warped so its difficult to keep items completely flat.

I’ve bought these a couple times for my art students. They are a great size. Still find all cardboard on Amazon too expensive for what it is but I don’t have alternative options at the moment so I guess they get my money. I do find them very useful.

These are PERFECT for shipping cards, postcards and other items you dont want to bend. These pieces are actually sturdy and rigid, which is not always the case. They are also pretty lightweight so they dont make your package too heavy. Just what I needed and Ill be back for more.

Perfect thickness for my postcard shipping needs.

I Love these :D they fit inside my 5x7 envelopes :D