Express Flyer is the most popular service of TCS. The name is derived from and based on the iconic sealed bag made of strong, recyclable, water-proof and tear-resistant, d2w-compliant Virgin material. The bag, once sealed, cannot be opened with an intention to re-seal, thus making it impossible to hide the signs of tempering with the enclosed contents. The Express Flyer can be used with a host of value-added services e.g. the Overnight Express.