This is a OPP bag with a tape closure. It's the perfect size for a B5 sheet of paper folded into quarters. It has high transparency, allowing the contents to be seen clearly. You can enclose small, long items such as business documents, delivery notes, warranties, and gift certificates. It prevents dust and dirt, making it ideal for protection and storage. *If you wish to change to Mercari delivery* 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 90mm x Length 205mm + 40mm 【Quantity】100 sheets This is the same as Crystal Pack or Clear Pack.