This case made of re-nylon, prada's innovative regenerated fabric, holds two stainless steel lunch boxes made in collaboration with black+blum, the brand known for its sustainable food containers, bottles and thermoses. Original in design, the products are made of durable materials with reduced environmental impact. For sustainable care to preserve the product's characteristics and reduce microfiber shedding, we recommend not washing the item too often. Let the product air out after every use and have it dry cleaned at a specialized ecological dry cleaners.