Material: Paper Type: Cards, Letters, Wrapping This is a set of 20 long envelopes for bills, gift certificates, etc., without folding them. They have been decorated cutely with stickers and masking tape. Includes bag sealing stickers. Regarding shipping, we use the most affordable method possible. Also, we are not responsible for any problems after shipping. This is a handmade item. We make them carefully, but as they are handmade by amateurs, there may be distortions, misalignments, etc. If you are looking for perfection like a commercially available product, please refrain from purchasing. m(__)m