Never inhale helium, as it can be dangerous. Use a manual pump or helium tank for inflation.
These have a shiny, metallic finish and can hold helium much longer than latex. However, they are sensitive to temperature; extreme heat can cause them to burst. baloons
The most common variety, often used for arches and garlands. They are best for air inflation if smaller than 9 inches, but can also hold helium for shorter periods. Never inhale helium, as it can be dangerous