The white bubble mailers measure 8.5×12 inches inside. With full air bubbles, they protect valuable products from damage. The inner lining uses gray film to keep contents private, even in strong light. ✅ Strong Self-Sealing Adhesive: The four-season adhesive maintains strong stickiness year-round, preventing items from being tampered with during transit. The adhesive is covered with a silver strip for easy peeling and sealing. ✅ Sturdy & Durable Construction: Made with polyethylene, these thickened shipping bags are puncture-resistant, waterproof, and tear-proof, ensuring safe delivery even in foggy or rainy weather. ✅ Convenient & Easy to Use: Ideal for small and medium businesses, these poly shipping bags don’t require extra packaging material, saving time and mailing costs. Suitable for transporting cards, CDs, DVDs, jewelry, makeup, photos, magazines, books, clothes, and more. ✅ Better Service: For any quality issues, contact us for a 100% satisfactory service. We’re dedicated to making better products to help your business thrive.