The quality is good. I am confident. It may be a little expensive, but it's worth the price. For those seeking quality, Please give it a try!! Trial 50 sheets: ¥600 100 sheets: ¥900 200 sheets: ¥1700 Size: Approximately (Width 250mm x Depth 305mm + Flap 45mm) Please understand that there may be some errors. Color: White Thickness: Approximately 0.06mm (60 microns) Material: LDPE, Low-density polyethylene *Features/Performance: Odorless, safe. Although thin, it has good stretchability and is quite durable. Comes with tape for easy packaging, increasing work efficiency and saving time. Made of PE material, it is waterproof, so you can rest assured even on rainy days. The back side is processed with black, so it is opaque and protects privacy. *Product Experiments: ① Confirmed that there is no odor. ② The thickness is approximately 0.06mm (60 microns), with some deviation. ③ Although the product is thin, it is quite durable. It is difficult to make a hole by putting a finger in the bag and pulling from the back, so it has good stretchability and is difficult to tear. ④ Water does not leak when water is put in the bag. ⑤ The contents of the closed bag cannot be seen. *Uses and Benefits: Used for shipping items such as documents, DVDs, paperbacks, stationery, and clothing. Unlike cardboard boxes, the bags can be adjusted to the shape of the product, and since the three sides of the bag can be adjusted, unlike cardboard boxes where the three sides are fixed, shipping costs can be reduced. Shipping Services Used: Compatible with various mail services such as Nekopos, Yu-packet Post, Yu-packet, Click Post, Hikyaku Yu-mail, Hikyaku Mail, and Yu-mail. Can also be used for Yu-pack, Takkyubin, and Hikyaku Takkyubin.