DELFY®, a waterproof and repellent fabric made from Toray's advanced technology, was adopted as the surface fabric. Nylon yarn with 70d aznd 280d tack, which is resistant to tension and friction, is used. The front surface is subjected to excellent water-repellent processing to repel rain, and the back surface is bonded with 0.2mm thick PVC to enhance its strength and waterproofness.

Pocket fabrics for laptops and smartphones are made of Doden®, an antistatic material that uses Belltron®, a conductive fiber. Electrostatic electricity generated by friction such as loading and unloading of baggage and drying in winter may charge the fabric and adversely affect electronic equipment. Doden® suppresses and removes static electricity by corona discharge.