The Snowball Blaster by Wham-O launches softball-sized snowballs up to 50 feet. The blaster uses a slingshot action to launch the snowball and can store up to 3 snowballs at a time. Instead of requiring batteries, the blaster uses 'elastomers' for power, which perform similar to elastics in gearing up the blaster for launch. Since this product is used in colder weather, cold-resistant plastic makes up the device.
