Bunch O Balloons Pump and 16 Self sealing Party BalloonsSave time and your breath with ZURU Bunch O Balloons Self Sealing Party Balloons! Fill, tie and string up to 40 party balloons in just 40 seconds! There's no more blowing, no more tying and no need to add ribbon or string! Simply attach the stems to a helium tank or an air compressor and press go! Within seconds, your Bunch O Balloons Party stems will fill and self tie with ease and convenience. Suitable for 14+ years Includes only 1 set of 16