Heavy Duty Poly Mailers are designed for shipping items that require a little extra strength and durability. Made from tough polyethylene, it offers enhanced weight capacity compared to standard mailers while still remaining lightweight and cost-efficient. It features a strong self-seal adhesive closure for secure, tamper-resistant packaging, along with a water-resistant exterior to help protect contents in transit. An anti-static liner also makes packing easier, while the opaque finish ensures privacy for shipped goods.