100-1000 Packing List Envelopes 4.5″x5.5″ Invoice Shipping Label Self Seal Bags Features: Packing list enclosed label measures 4 1/2″ X 5 1/2″ And is made of waterproof poly material to protect packing lists. Pressure sensitive backing sticks to almost any standard shipping surface. Fast, simple application-simply peel off paper backing and apply to package. Pressure sensitive, back loading envelopes for protecting shipping documents from moisture, dirt and abrasion. Specifications: – Size: 4.5×5.5inch – Top film: 45mic clear LDPE – Bottom film: 35Mic white LDPE Package Include: 100-1000 Packing List Envelopes