Our Buttero is a vegetable-tanned leather from Conceria Walpier in Italy. Buttero leather is incredibly soft and comfortable, wearing better with age as it develops natural shine and deepening of colour. It is completely smooth and supple, pairing perfectly with a variety of watches. It works particularly well with vintage watches. Tannery: Conceria Walpier, Italy (known for their fine leather finishing) Temper: Firm Surface: Smooth Patina: High Water Resistance: Low. To ensure longevity, avoid moisture or soaking our straps in water. We will email you after your purchase to confirm the details of the bund pad. Key Bund Pad Dimensions: Center Width: (Diameter of the watch including the crown) Narrow Width: (Lug width + 5mm) Length: (110mm by Default)