Coldkeepers Penguin Insulated Mailer - Premium Temperature Protection

This innovative insulated mailer arrives in a compact, compressed form and expands to nearly three times its size when activated, providing exceptional thermal protection for temperature-sensitive shipments. Each case contains 50 ready-to-use mailers.

Advanced Insulation Technology

The Coldkeepers Penguin mailer features a 1-3/8 inch thick insulated construction that maintains temperature stability for sensitive payloads during transit. Its inflatable design saves valuable warehouse space while ensuring maximum protection when deployed.

Secure Shipping Solution

Designed specifically for sensitive payloads, this mailer eliminates the need for an outer box. Simply load your temperature-sensitive items, seal the envelope, puncture the activation point, and apply your shipping label for immediate use.

Tamper-Evident Security Features

• Leak-proof zipper closure for complete containment
• Tamper-resistant pressure-sensitive tape included
• Attached adhesive strip for secure sealing
• Metallic color finish for professional appearance

Ideal for shipping biotech and pharmaceutical products, clinical specimens, laboratory samples, perishable goods, and specialty gift boxes. Save on freight costs and warehouse space with this efficient, all-in-one shipping solution.