100 Pcs 6.5 By 4.5 Inch Rigid Mailers With Self Seal Envelopes Stay Flat Cardboard Mailers For Shipping Postcards Calendars Photos CDs Documents Comic Books And More

100-Pack Rigid Self-Seal Mailers for Flat 6.5x4.5
✔️ 6.5x4.5 in stay-flat, white, 350gsm rigid mailers

These 100 white rigid mailers are designed to protect flat items during shipping. They suit postcards, photos, calendars, CDs, documents, and more, with a stay-flat design and a self-seal closure for quick handling.

✅ Pack of 100 white rigid mailers
✅ Size 6.5x4.5 inches (16.51x11.43 cm) fits postcards, photos, calendars
✅ 350gsm thick paper for bend-resistance and protection
✅ Self-seal flap for quick, secure closure
✅ Stay-flat design protects contents during transit
✅ Surface accepts stamps, labels, or colored ink
✅ Ideal for post offices, ecommerce stores, or home shipping

💡 What is a rigid mailer used for in everyday shipping?

A handy packaging option that keeps flat items straight and protected. - Protects postcards, photos, calendars, documents during transit
- Adds rigidity to resist bending during handling
- Easy, secure closure with a self-seal flap
- Ideal for offices, shops, or home shipping workflows