With a pump (not included), there is more to follow the many free tutorials found on the internet video to learn how to create all kinds of shapes. This is very convenient because it can be exercised at the same time that the demonstration is followed (much clearer than with written explanations), it quickly becomes a "pro"! And with 100 balloons were to do!
Previously I bought an inflator pack + 10 balloons in GIFI for 10 and then I had been very disappointed: balloons squealing unbearably during handling, which burst easily (and when one has only 10 This is a big worry). Compared really Qualitex win hands down! They are good swell, squeal little honorably and fairly resistant to the actions necessary to transform the sword, dog, plane ... and in battles sword, drawing the eyes, mouths etc marker ...
In short I recommend this article.