Introduction
A cardboard envelope mailer is a type of courier envelope with a self-adhesive seal and easy-to-tear strip. It can be customized to different sizes and can feature different logos.

Features

1. By using 250/300 GSM grey-backed white cardboard, the paper is sufficiently heavy and has good stiffness, making it an excellent choice for packaging products such as folded items, bills, documents, and more.
2. The 20mm widened edge sealing on both sides ensures strong adhesion without edge bursting, making the product safer during transportation.
3. A transparent/red easy-to-tear tape is added to the self-adhesive seal, allowing for easy opening without the need for tools.

Usage
They are ideal for shipping folded products, bills, photos, documents, letters, and more.