Layering casual leather outfits for winter combines style with practicality. Start with a basic thermal or knit sweater as your base layer to lock in warmth. Add a hoodie or a flannel shirt for extra coziness, then top it off with a leather jacket, like a bomber or biker style. Opt for a scarf and gloves to accessorize while providing extra warmth. For the bottom half, pair slim fit jeans or jogger pants with ankle boots or sneakers. This layered approach keeps you comfortable without sacrificing your casual, cool look during the colder months.