WEATHER BALLOONS
These balloons are typical for probing, have a latex surface that expands as it rises to explode when it reaches the maximum expansion.
SUPERPRESSURIZED BALLOONS
Pressurized balloons are different from those of latex by having a rigid surface once it reaches its maximum expansion stops up the balloon rather than explode.
ZERO-PRESSURIZED BALLOONS
The category of solar and hot air balloons, these balloons have an open envelope and they change air density by varying the air temperature instead of volume.