Weather-resistant envelope keeps order information and invoices intact during shipment. Self-adhesive closure and full self-adhesive backing help simplify order processing.  Global Product Type: Envelopes/Mailers-Packing List Envelopes Seam Type: Weld Flap Type: Square Security Tinted: No Opening: Open End Closure: Self-Adhesive Exterior Material(s): Plastic Exterior Dimensions: 5.5 x 4.5...