PU Sky Balloon is made of thermoplastic urethane material, it has many advandages than pvc material.
It is much more light,data 125 g/m2 PU VS 245 g/m2 PVC
2.) Helium Lost
PU helium lost is 1-2% per day VS PVC helium lost 3-4% per day
3.) Temperature Suffer:
PU works – 30 to 70 Celsius VS PVC works – 10 to 40 Celsius, better working for cold and hot place
Good for sticker