Airwalker balloons can be filled with helium or air and are a great way to create an impact at a party. They are large balloons most being around 3 - 4 ft tall. They are easy to inflate and assemble. Weights and instructions are included. We have Elsa from Frozen, Minions, Buzz Lightyear, Spiderman, Batman, Ironman, stormtrooper and R2D2.