This is a Insole sheet specifically for toolboxes, made from bonded leather by the renowned German company Salamander. [About the sizes]There are four types to fit different sizes of tool boxes.Please make sure to purchase the correct one for your tool box.IS-350: For Y-350 & T-350 only (Not available for ST-350)IS-320: For T-320 onlyIS-190: For T-190 & T-192 onlyIS-150: For T-150 & T-152 onlyAll sizes are genuine products with Toyo Steel logo. [What is bonded leather?]Bonded leather is an environmentally friendly material made by processing leather scraps into fibers, which are then mixed with resin and reprocessed into sheets. It retains the natural texture, durability, and moisture absorption of genuine leather, while also allowing you to enjoy the color changes and patina that develop over time. Due to the characteristics of bonded leather, there may be black spots or discoloration during the production process. These bonded leather items offer a distinct look and texture different from sponge-made products, presenting a beautiful piece. Designed and manufactured meticulously for customers who use our toolboxes, from the product itself to the packaging. [Quality Display]Bonded leather (60% crushed leather fiber, 40% latex resin, oil, etc.) [Handling Precautions]*If it gets wet, allow it to dry naturally.*Because this product is different from natural leather, please avoid using leather cleaners or creams, as this may cause stains or unevenness. The usage example photos were kindly provided by our manufacturer, WPB Co., Ltd. brand TOYO STEEL Size (IS-350) 355x144x1mm Size (IS-320) 320x126x1mm Size (IS-190) 194x98x1mm Size (IS-350) 145x97x1mm Texture Smooth Material Bonded Leather Weight (IS-350) 0.04kg Country of manufacture Japan Intended Use General storage box (Not a toy)