This high-quality Black Mailing Box measures 150 x 100 x 75mm and is constructed from durable kraft corrugated cardboard, containing over 50% recycled fibber. Its solid black exterior without any printed designs perfectly showcases its sleek and professional appearance. Using the efficient die cut folding format, our boxes are double-sided on the side walls (after folding), and smooth and seamless on the top and bottom. With meticulous attention to detail, our Boxmore boxes are ideal for meeting high-efficiency Pack and Send requirements, making them the top choice for professional ecommerce packaging.