This is a tape-free OPP bag. It's a "perfect" fit for A4 size paper. It has high transparency, allowing you to see the contents clearly. It can be used for various purposes, such as protecting documents like flyers and pamphlets, and for wrapping apparel items and gifts. ★ If you are enclosing thick A4 size items, "S22.5-31/A4 size" is recommended. Please check the second and third images for comparison. ※ If you wish to change to Mercari shipping We will accept it for "+100 yen" on the displayed price. Please be sure to contact us in the comment section before purchasing. 【Thickness】0.03mm 【Size】Width 215mm x Length 300mm 【Quantity】200 sheets (100 sheets per bag x 2 bags) This is the same as Crystal Pack or Clear Pack.