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.

Needed these for shipping small paper products. Found they fit in the envelopes well and my customers thank me for using quality cardboard to protect the antiques. I will be ordering more.

I purchased this product from the seller on Amazon and I am thoroughly impressed. It surpasses expectations with its exceptional durability, flawless performance, and intuitive user interface. I wholeheartedly recommend it.

I ship out trading cards, and I use these in the envelope, so the card doesn’t bend. These things are VERY stiff, and work amazingly well.

These are very nice for shipping postcards and such for ebay purchases! Would also be great behind photos. They are very supportive....do not bend easily. Much better than another brand I bought in the past. Will be buying again!

Durable and easy to assemble

Definitely helped me with my projects

Thanks really great

So I needed something to keep my handmade cards from bending. I typically use rigid mailers for etsy orders, but these are going to be used specifically for FBA. These are so much more sturdy than my rigid mailers and so lightweight! Great product!

The cardboard sheets were shipped quickly, packaged well, and were great quality.