Poly Mailers Shipping Bags Envelopes Packaging Premium Bag 9x12 10x13 14.5x19 Premium Poly Mailer Shipping Bags – Durable, Waterproof & Self-Sealing Available Sizes: 4x6, 5x7, 6x9, 7.5x10.5, 9x12, 10x13, 12x15.5, 12x16, 14.5x19, 19x24, 24x24, 26x26, 26x32 Upgrade your shipping with our high-quality Poly Mailers—lightweight, durable, and trusted by thousands of e-commerce brands. Made from strong polyethylene, these mailers are waterproof, tear-proof, puncture-resistant, and fully self-sealing, giving your products the protection they deserve without adding extra shipping weight. Perfect for clothing, soft goods, accessories, and other non-fragile items, poly mailers offer a sleek, professional look while keeping shipping costs low. They store easily, load quickly, and provide exceptional resistance against weather, tampering, and rough handling during transit. Why Our Poly Mailers Are the #1 Choice for Online Sellers Superior Protection: Waterproof, tear-resistant, puncture-resistant, and built to withstand shipping conditions. Self-Sealing Convenience: Strong pressure-sensitive adhesive ensures a tamper-evident, secure closure every time. Lightweight & Cost-Efficient: Reduce shipping costs compared to boxes while maintaining package integrity. High-Strength Seams: Designed for over-stuffing and stretching without ripping. Ships With All Major Carriers: Fully approved for USPS, UPS, and FedEx. Brand-Friendly: Sleek, professional appearance that elevates your packaging. Labels Stick Perfectly: Shipping labels adhere securely with no peeling during transit. Huge Size Selection: From small accessories to oversized apparel, we have a mailer for everything. Perfect For Shipping ✔ Apparel✔ Soft goods (blankets, bedding, towels)✔ Handbags & backpacks✔ Beauty products✔ Paper goods✔ General e-commerce items