The Leo Envelopes C4 Self Seal Manilla Pocket 25 Pack features strong 90gsm large-format mailing jackets. The 324x229mm layout fits unfolded A4 paper flat. A secure pocket opening enables fast top-loading document insertion. The quick self-seal flap requires zero water or adhesive. Durable, opaque brown manilla paper protects confidential reports. It serves as an essential, cost-effective corporate mailing solution.