Keep orders safe from damage and tampering with these Coastwide Professional bubble-lined poly mailers. Protect merchandise without adding bulk when you use these lightweight poly mailers to ship customer goods. The square self-sealing flaps keep items secure during transit, and the bubble-lined interior provides an extra layer of protection to prevent damage or breaking. These Coastwide Professional bubble-lined mailers have heat-welded seams with 4.5 pounds of side-seal strength to withstand the rigorous shipping process without falling apart.