25 pcs 249x352mm (209 x 312 x 40 mm) of Cardboard Expandable Envelopes Peel and Seal Capacity Book Mailers/Card Mailers for Royal Mail Large Letter Small Parcel (PIP)

• Large Capacity: These protective mailers measure 249x352mm (209 x 312 x 40 mm), making them ideal for protecting books, brochures, calendars, and more from scuffs and scrapes.
• Cost-Effective Postage: Sized to fit Royal Mail Large Letter limits, these mailers can save on postage costs compared to traditional box parcels.
• Lightweight Design: Constructed from lightweight yet durable cardboard, these mailers are easy to handle and transport.
• Versatile Protection: Suitable for safeguarding various items during shipping and storage.
• Convenient Packaging: The envelope-style design allows for quick and easy packing and sealing.
• Pack of 5, 10, 25, 50, 100, 200, 500, 1000.

These protective mailers are ideal for safeguarding books, brochures, calendars, and other items from scuffs and scratches (not bending). Often referred to as Capacity Book Mailers or Card Mailers, they are designed to fit within Royal Mail's Large Letter size limits (also known as Pricing In Proportion - PIP), allowing you to save on postage costs compared to traditional box parcels. Lightweight and convenient, the 249x352mm (209 x 312 x 40 mm) envelope is the largest available that meets the Royal Mail's size requirements. Utilise these mailers to securely ship your valuable documents and publications.