Protective mailing envelope 265 x 400 + 50 mm, 60 micron thickness, permanent adhesive closure. Tearresistant and super resistant design for secure shipment and storage. Key benefits Secure closure: Permanent adhesive ensures the envelope stays sealed after closure, reducing the risk of accidental opening during transit. Strong construction: 60 micron thickness provides reliable resistance to tearing and rough handling. Right size for documents: External dimensions 265 x 400 mm with a 50 mm flap accommodate A4 documents flat or larger media that fit within these dimensions. Easy to use: Simple sealandsend format speeds packing operations and reduces handling time. Versatile protection: Protects paper documents, printed materials, and thin goods from dust and light moisture during delivery and storage. Features and important attributes Dimensions: 265 x 400 + 50 mm, designed to hold items up to 265 by 400 mm with a 50 mm sealing flap. Material performance: 60 micron thickness for durability without excessive bulk. Closure type: Permanent adhesive closure for onetime secure sealing. Durability: Tearresistant and super resistant construction to withstand handling and transit stresses. Practical use scenarios invoices, contracts, and catalogs: Send A4 documents flat and protected; permanent seal prevents tampering in transit. Mail and ecommerce packing: Use for sending folded or flat printed materials, brochures, and small textile samples that need reliable, tamperproof packaging. Document storage and archiving: Store legal papers, manuals, and reports in a tearresistant envelope that keeps contents together and protected. Why choose this product This envelope combines a practical size with robust material and a permanent adhesive closure to provide a dependable packaging solution for document handling, , and storage. Its 60 micron construction and tearresistant design offer consistent performance where secure containment and straightforward operation are priorities.