This is a tape-free type of OPP bag. It's a size that can perfectly fit A4 paper. It has high transparency, allowing contents to be seen clearly. It can be used for various purposes such as protecting documents like flyers and brochures, and for wrapping apparel items and gifts. *If you wish to change to Mercari delivery: We can accommodate this for an additional "100 yen" to 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 equivalent to Crystal Pack or Clear Pack. ★Please also compare it with our tape-attached OPP bag of the same size, "T22.5-31/A4 size".