Keep your temperature-sensitive items secure during shipping with these professional-grade insulated mailers. Each pack contains 10 high-performance 8x11 inch envelopes featuring a reliable self-seal closure system. These mailers are specifically designed for shipping items that require temperature control, such as food items, cosmetics, and various health products. The waterproof exterior provides an additional layer of protection against moisture and handling during transit. The tamper-proof design helps ensure the contents remain untouched from sender to recipient. These single-use mailers combine durability with practical functionality, making them ideal for businesses and individuals who need to ship sensitive items. The generous 8x11 inch size accommodates a variety of products while maintaining insulation efficiency. Perfect for both personal and commercial shipping needs, these mailers offer a professional solution for temperature-controlled packaging requirements.