Characteristic Available captive for many hours. Transmission of helium gas is minimum. If compare with a general rubber balloon, captive hour is more than 2 times. Available captive for long time under sunshine of summer. Durableness Excel as heat-resistances and aging-resistances. No discoloration Low price Price is lower than advertising balloon which is made by vinyl. Materials Natural rubber Shape Round After pumped helium gas, round is being kept, no transformation. Color Red, Blue, Yellow, White etc. Size Type 200 = 4 feet (Diameter) Type 300 = 5.5 feet (Diameter) We can produce any color / size balloon depending on your preference.