Size: A3 (300mm x 400mm)

Color: Brown (natural kraft)

Material: Durable paper/card (kraft paper)

Closure: Usually flap with adhesive, peel & seal, or gummed

Quantity: 1 envelope

Use: Ideal for documents, artwork, certificates, or large-format papers

Eco-friendly: Often recyclable and biodegradable

Orientation: Typically portrait or landscape opening