I used these to ship small prints and multiple card orders. I bought them from Uline. Each measures 10"x7-3/4"x1" when stuffed full. They are large enough to ship DVD cases or small paperback books. The mailers are self-sealing and easy to write on and do a good job protecting flat art but not so heavy to cost a fortune to ship small lightweight items.
So many together are quite heavy. If actual shipping costs are more than $3 different I will refund the difference.