These 6" x 9" brown Kraft clasp envelopes are the perfect solution for secure, reusable mailing and document storage. Constructed from heavy-duty 28lb Kraft paper, they provide dependable durability for holding thicker files, reports, catalogs, and more. Each envelope features a reinforced metal double-prong clasp and a strong gummed flap for dual-seal protection—ideal for both personal and professional use. The clasp is designed for repeated opening and closing, making these envelopes suitable for ongoing storage or frequent handling in office, home, legal, and business environments.