The Bubble Mailers 3.5×5 Inch 50 Pcs are small self-sealing mail shipping bags designed for everyday mailing. The rectangular shape and black color make them versatile for various shipping needs. Made of paper material, these mailers are lightweight at 9.1 ounces and product dimensions of 5 x 3.5 x 0.04 inches. With a self-seal closure, these bubble mailers provide a secure and reliable way to ship small items. Ideal for small business or individual use, this pack of 50 mailers ensures you have an ample supply for your shipping needs.