Diesel Men's Black Leather Jacket - Racer Style with a Sleek and Aged Look. This black lamb leather jacket, supple and drum-aged, offers an elegant and timeless racer style. Product Details: Composition: 100% lamb leather. Fit: Regular, slightly boxy. Features: Snap button collar, double-ended zipper closure, zippered pockets and cuffs. Detail: Embossed Oval D logo on the sleeve. Lining: For added comfort.