This is a tape-free type OPP bag. It's a size that perfectly fits A4 paper. It has high transparency, allowing the contents to be seen 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 wish to change to Mercari shipping: We will accept it for "+100 yen" on top of the displayed price. Please be sure to contact us in the comment section before purchasing. 【Thickness】0.03mm 【Size】Width 225mm x Length 310mm 【Quantity】100 sheets This is the same as Crystal Pack and Clear Pack. ★Please also compare it with the tape-attached OPP bag "T22.5-31/A4 size".