These Phone Shipping Boxes measure 160 x 120 x 40mm and are brand-new to the market, providing exceptional protection for your valuable items such as phones and other devices with their unique, innovative, eco-friendly retention system. Engineered to secure contents using flexible yet robust crepe paper, these boxes minimise movement and reduce the risk of damage during transit. They feature a self-seal adhesive strip for a secure closure without the need for packing tape, and an easy-ripper strip to ensure a quick and convenient unboxing experience for your customers. Completely plastic-free, fully recyclable, and biodegradable, these retention postal boxes offer an excellent eco-friendly solution for your business needs.