Additional notes start here) The price will be reverted to the original price starting tomorrow. Additional notes end here) Heat-shielding, moisture-permeable, waterproof, and windproof sheet Heat Barrier Sheet II I purchased this used on Mercari in 2024 and used it between the boards and tatami mats as a cold対策 measure for a Japanese-style room in winter, after removing the tatami mats. The original purchaser bought it around 2021. When I purchased it, there was about 38m remaining, and I used about 24m for two 6-tatami mat rooms. I haven't measured it, but I estimate there is about 14m left. The remainder has been stored in a box, so it's in good condition, but please refrain from purchasing if you are concerned. Shipping will be done by wrapping it securely in a bag to prevent it from getting wet if I don't have a suitable cardboard box. Reference: https://www.sprout-univ.com/heat-barrier-sheet/