16" small size aluminum foil balloons, silver. The ideal decorative supplies, better effect to use with other balloon, with better festival effect. 16"(1"=2.54cm), before blowing is about 40cm height. Made of aluminum foil. Can be repeated use, easy to fill vent. Automatic sealing, filling the ball pinch flat mouth, after the completion of the ball mouth bring glue sealing automatically. Remarks: aluminum film is no scalability, when filling the ball so please don't fill too full, because of gas heat bilges cold shrink, or summer temperatures, for aluminum foil balloon deflated, in order to avoid burst; When winter or the temperature decrease, should fill gas for aluminum foil balloons. Don't use electric inflator pump inflatable oh, you can use the manual pump filling. Kindly Remind: if accidentally broke in use process, can be used immediately cellophane tape paste adding gas, can be at ease use