This is a dark-toned dye. Mud-dyed leather - BUND pad only, up to 20mm The back side is made of completely waterproof leather. Do you know mud-dyed leather? It uses the dyeing technique of Amami's traditional Oshima Tsumugi, It is a beautiful and very rare leather (more expensive than crocodile leather). The back side uses completely waterproof leather (cowhide) that is resistant to sweat. It is stronger than 3M waterproof leather and has the advantage of being resistant to scratches and stains. You can use watches with weak waterproofing without worrying about sweat. BUND Pad Total length 80mm X width 42mm X thickness 2mm Top leather: Amami mud-dyed cowhide Back leather: Completely waterproof calfskin, black About mud dyeing: It is a dyeing technique of "Honba Oshima Tsumugi," a traditional industry that Amami boasts to the world, with a history of 1300 years. Please enjoy the deep black and brownish colors that cannot be expressed by chemical dyes, and the unique color patterns of each item, created by the boiled juice of Techi trees that grow naturally on the island and mud. It is also vegetable-tanned leather, so you can enjoy aging. Disclaimer Belt is not included. The actual color may look different depending on your monitor. Please understand. We are sorry, but Please refrain from price reductions as the price only covers material and labor costs. We will offer a discount if you purchase two or more items at the same time. As it is handmade, it is not as uniform as factory-produced products.