Keep your important documents safe in transit with Premail A4+ Board Backed Envelopes strong, durable envelopes designed to prevent creasing and bending. Featuring a rigid backing for extra protection, these envelopes are ideal for posting certificates, photos, legal documents, and other flat items that must arrive in pristine condition. The peel-and-seal closure ensures a secure fit while making packing quick and hassle-free. Perfect for business, office, and personal mailing needs, these envelopes combine professional presentation with reliable postal protection.