Thank you for viewing. This is a handmade item. Product: Bento Box M, Long Masu Ajiro Weave D (10) Materials: 1. Madake Green Bamboo (Long Masu Ajiro Weave) 2. Copper Nails 1.4 x 13 mm, Round Head (for edge fixing) Size: Outer dimensions: Width 11.5 x Length 21 x Height 8.5 cm Body dimensions: Width 10.5 x Length 19.5 x Height 7.5 cm Lid dimensions: Width 11.5 x Length 21 x Height 6.5 cm Packaging and Shipping: Wrapped in bubble wrap and packed in a recycled cardboard box. Yu-Pack 60 size (Monday-Friday, shipping on weekdays) ※ There are slight burn marks from the inner side bending process. ※ Pencil guidelines and positioning marks may remain. ※ The 600ml PET bottle in the image for size comparison is not included. Usage Notes: ※ There is a gap between the body and the lid; please use a handkerchief or drawstring bag to wrap the contents. ※ Do not use in a microwave (due to the use of metal). However, all products that fit in a microwave before packaging and shipping have been treated with 70°C heat for insect control. ※ Avoid soaking in water (the bent parts may revert). ※ Store in a well-ventilated place during the humid rainy season (if mold appears, wash with water and wipe). There may be stains and discoloration inherent to the materials. Please understand. This product is not suitable for those seeking perfection.