Indigo® C3 White All Board Envelopes - Peel & Seal, Heavy-Duty Pocket Mailers, Eco-Friendly Rigid Cardboard Postal Packaging (Pack of 10)

Heavy-Duty Protection - Indigo C3 white all board envelopes made from rigid card to stop bending, creasing, or damage during posting. Generous C3 Size (324 x 458mm) - Perfect for unfolded A3 sheets, photographs, artwork, certificates, catalogues, and other large documents. Secure Peel & Seal Closure - Strong adhesive strip provides a tamper-resistant, reliable seal without the need for tape or glue. Professional White Finish - Pocket-style design with a clean appearance for mailing business reports, creative work, or important papers. Eco-Friendly & Value Pack - Pack of 10 recyclable envelopes, combining durability with sustainability for offices, schools, sellers, and personal use.