Comfortable Safety Shoes High Verde Comfort CF110 Midori Anzen Co., Ltd. Product Code 13020438 ● Toecap: Wide Resin ● Upper: Cowhide (Embossed) ● Insole: PE Cup Insole (Antibacterial & Deodorant) ● Outsole: Two-layer polyurethane foam sole Standard Weight: 780g / pair ※ Weight for both shoes ※ Standard weight is based on 26.0cm. No box Thank you for viewing. I'm not sure when I bought these, but I think it was several years ago. Please refrain from purchasing if you are concerned about storage at home. I am not familiar with the product itself, so please check the photos before purchasing. Although unused, please consider purchasing with the understanding that it has been stored by a private individual. No claims, no returns. Please feel free to contact me. Foamed polyurethane sole products are widely used because they are "lightweight, have good cushioning, and are resistant to wear," which contributes to reducing worker fatigue. However, due to the characteristics of foamed polyurethane, it may deteriorate and break down regardless of the degree of use if stored for a long time. This phenomenon is called "hydrolysis of foamed polyurethane," and moisture in the air, water, acids, alkalis, bacteria, and mold are cited as causes of deterioration. ※ Generally, the frequency of occurrence increases when stored for more than 4 years after manufacture.