The Leo Envelopes C5 Self Seal Manilla Pocket 25 Pack features durable 90gsm mid-format mailing jackets. The 229x162mm layout fits folded A4 documents flat. A secure pocket opening enables fast top-loading insertion. The quick strip-seal flap requires no moisture. Robust opaque manilla paper keeps invoices totally confidential. It serves as a classic, dependable workspace mailroom asset.