Why Choose the XFasten Packing Slip Envelopes? The XFasten Packing Slip Envelopes feature a clear CPE film that keeps barcodes and printed text visible for reliable scanning, a 65 gsm release liner that reduces curling and tearing during application, and a reinforced pressure-sensitive adhesive applied at an optimized 30 gsm coating weight to hold securely without excessive tack. Adhesive Specification The adhesive layer uses hot-melt glue with a 30 gsm coating weight. This coating level is selected to provide post-application hold on common shipping surfaces while limiting excessive tack during handling. A 65 gsm release liner is used to support single-piece removal during application. Material Construction The pouch body is made from 2 mil clear CPE film. The film provides resistance to moisture, dirt, and handling during transit while maintaining optical clarity. This allows barcode and text visibility when used as shipping sleeves or a clear shipping label pouch. Size and Fit Parameters The outer dimensions are 4.5 × 5.5 inches. Interior usable space measures 4 × 5 inches. The envelope is intended for standard packing slips and shipping labels. It is not sized for unfolded or oversized letter paper. This sizing applies consistently across all packing envelopes in the set. Application and Use Cases The envelopes attach to cartons, boxes, and poly mailers using pressure-sensitive adhesion. They are commonly used as packing slips pouches, packing pouches, shipping pouches, and package label sleeves for invoices and documentation. Each packing list pouch is applied after liner removal and remains attached throughout handling and delivery. Pack Configuration This set includes 100 self-adhesive packing slip envelopes, packaged for storage in shipping and fulfillment operations.