Rainbow inflatable arch is generally 6 meters, 8 meters, 10 meters, 12 meters, 15 meters, 18 meters, 20 meters, 25 meters, 30 meters, the diameter of each type of arch is not the same, specific analogy, such as 12 meters of the general diameter of the arch is 90CM, that the words of the banner should be done 45CM or so, the arch is presented in a semi-circular body, 12 meters of the arch that his semi-circumference is about 19 meters. Based on aesthetic reasons, the general banner into 10 meters or so

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