The bag is intended for people who work and live in the urban environment. It protects your precious pods and gadgets from dangers in the outer world. The material we used for the bag is heavy-duty technical fabric that made of carbon-fiber double side coated with polyurethane. we assembled each fabric panel by using high frequency welding techniques rather than traditional sewing; it is stronger and brings bag to better waterproof level. The inflatable system consists with special TPU films provide a high tensile, high elongation and resilient features.