The belt is made of the finest 100% organic cotton canvas textile and incorporates the robust, flat 4-layered structure inspired by traditional Japanese judo belts. A touch of modern sports design is added with a high-quality aluminium buckle made by AUSTRIALPIN, a renowned manufacturer of mountaineering and sky sports equipment. The outer reflective fabric was produced by an advanced Japanese manufacturer that actively engages in CO2 reduction initiatives. The base Rose Madder colour canvas fabric was dyed with natural madder roots, which is a traditional Japanese herbal dyeing technique. The logo emblem made of brass was forged with expert craftsmanship in a workshop located in Tokyo, renowned for creating the finest insignia emblems. [ Outer retroreflective fabric ] Strong friction against the surface may cause the reflective material to peel off. Acidic and alkali chemicals, oil, grease, sweat and other contaminants may discolour the fabric or reduce the reflective performance due to chemical reactions. If water-soluble dirt adheres, wipe it off with a wet cloth and dry it before use. [ Base 100% organic cotton fabric ] The colour of this garment will change over time due to the use of chemical-free natural herb-dye. Although the fabric is UV-cut treated, prolonged exposure to strong sunlight or fluorescent light can cause the colour to fade. To retain the original colour for as long as possible, please store in a place away from light. If sand or dirt adheres to the product, remove it with a dry cloth or soft brush. For water-soluble stains, hand wash the soiled area in room temperature water and be sure to dry it in its original shape before use. Use only neutral agents if necessary and never use alkaline, bleach, fabric softeners or brighteners.