Hey My Lover I Have Find a local Store who sell those amazing Balloons Tuff-Tex in 17" I already have forget how big and strong they are so I buy one for myself... And I Have to say - They Are The Best Balloons To Blow to Pop Ever! They become so huge and hard that Even Blowing it with the maximum power of my lungs it just don't pop I was so amazed To see that Huge Neck Growing on my lips that I just keep blowing It until my Big balloon popped on my lips With a Extreme Loud Bang! enjoy