I purchased this with the intention of using it when laying cushion flooring, but I ended up buying more than I needed, so I'm selling the excess. It's unused, and in addition to the photos I've uploaded, I have two more sheets left over. If you don't mind receiving those as well, I'll send them as a set. Original Price: 5,280 yen [Size] 100cm x 380cm Thickness 0.15mm [Number of Sheets] 4 sheets [Production Area] Made in Japan [Material] Kraft paper. Please use it under tatami mats, in closets, or in drawers. It has also been used in museums for cultural property protection (IPM). Do not allow it to come into direct contact with cultural property materials. *Please be aware of similar products. [Active Ingredients] Borate, Boron compounds (Disodium octaborate tetrahydrate (DOT)), Non-volatile [Anti-mite effect] Toxic (takes 14-20 days to take effect) [Anti-mold effect] Sterilizing action (not effective against all types of mold) [Impregnation Amount] 5,000mg/㎡ Since borate is not a volatile substance, the effect lasts semi-permanently. Because it is a highly water-soluble substance, if it is exposed to water for a long time, the borate will dissolve out of the sheet, reducing its effectiveness. Please be careful. https://www.amazon.co.jp/こうひん-こうひん-防虫・防ダニ・防カビシート-8帖用-boutyuu8jyou/dp/B01JFWN4YW/ref=asc_df_B01JFWN4YW?mcid=73c9ca20136e3395b64821f2bd9c157f&tag=jpgo-22&linkCode=df0&hvadid=707464845574&hvpos=&hvnetw=g&hvrand=12172899903512168160&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=1009268&hvtargid=pla-1433565763107&psc=1&hvocijid=12172899903512168160-B01JFWN4YW-&hvexpln=0 Instant purchase is OK. I can consider a small price reduction.