The 908 - 4.5 x 5.5 Packing List Envelopes are clear, unbranded pouches measuring 4 1/2" x 5 1/2" in size. With a thickness of 2 mil, these business envelopes are perfect for enclosing packing lists and other documents during shipping. The pack includes 908 envelopes and features box labels for easy organization and labeling. Ideal for material handling and industrial use, these envelopes provide a secure and professional way to send important information with your shipments.