3M Non Print Packing List Envelope PLE-NP1, 4-1/2 in x 5-1/2 in (Box of 100) Provides control and protection of on-package packing list and invoice documents Offers convenient peel-and-stick document attachment Features a polyethylene backing, synthetic rubber adhesive and paper liner Easy to use, this packing list envelope is side-loaded Non-printed design provides a clear window for logos, instructions or other information