7STAR 9x12 Poly Mailers 2000 Pack – 2.75 Mil Extra Heavy Duty Self-Seal Shipping Bags

Your best per-unit price on 7STAR 9×12 Poly Mailers — 2,000 Pack. At 2.75 mil extra heavy duty thickness, these self-seal shipping bags are the go-to choice for high-volume e-commerce sellers, FBA prep services, and fulfillment centers that ship t-shirts, accessories, books, and small apparel by the thousands.

The peel-and-stick self-seal adhesive strip creates a tamper-evident closure in one press — no tape, no heat sealer, no wasted time. The opaque white exterior with co-ex black lining keeps every order's contents private and protected from door to doorstep.

• Size: 9" × 12" inner (9.5" × 12.5" total with adhesive flap)
• Quantity: 2,000 poly mailers per case
• Thickness: 2.75 mil co-extruded polyethylene — extra heavy duty, waterproof
• Closure: Self-seal peel-and-stick adhesive strip
• Color: Opaque white / black co-ex interior liner
• Compatible with USPS First Class, Priority Mail, UPS, FedEx, Amazon Logistics
• Best for: t-shirts, small apparel, books, accessories, subscription boxes
• Case pricing — lowest cost per mailer for bulk buyers

Stock up and save. These 9×12 poly mailers bulk are engineered for sellers who ship hundreds of orders a week and need a bag that performs as hard as they do.