Shipping Bag ColomPac CP 012.06 B4 White Cardboard with Reusable Closure

ColomPac CP 012.06 B4 White Cardboard Shipping Bag is a rigid mailer designed for shipping documents, flat items and small goods in B4 format. The white cardboard construction provides structural protection against bending and light impacts while keeping contents flat and presentable. The integrated reusable closure enables secure resealing after opening, supporting returns, exchanges and multi-stage deliveries without additional adhesives.

Advantages

The B4-sized cardboard body combines stiffness with moderate cushioning to reduce the risk of folded or creased papers and thin items during transit. The reusable closure is simple to operate, allowing the envelope to be opened and resealed multiple times while maintaining a reliable hold. The neutral white exterior gives a clean appearance suitable for business correspondence and branded shipping. The lightweight design helps control postage costs while still providing better protection than standard paper envelopes.

Suitable for

• Shipping flat documents, certificates and contracts
• Mailing thin books, brochures and magazines
• Sending photographs, prints and posters folded to B4
• Delivering small, flat goods such as calendars or thin electronics

Key specifications

• Format: B4-sized mailer suitable for B4 documents and similar dimensions
• Material: white cardboard for rigidity and surface protection
• Closure: integrated reusable resealable closure for repeated opening
• Protection level: protects contents from bending and light impacts during transport
• Weight characteristics: lightweight construction to help reduce shipping costs

How to use

Insert the document or flat item into the B4 mailer so that edges are aligned with the internal envelope shape. Engage the reusable closure to seal the bag by folding and pressing the fastening mechanism into place. For returns or multi-stage delivery, open the closure by lifting the fastener, remove or add contents as required, and reseal using the same mechanism. When additional protection is needed, place the mailer inside an outer carton or add protective inserts before sealing.

Usage recommendations

Choose the ColomPac B4 cardboard shipping bag when you need reliable, reusable protection for flat items and documents. For fragile or bulky objects, combine the mailer with additional cushioning or a secondary outer box to ensure sufficient impact resistance during transit.