Punch the air or hit a hard surface to activate sounds and SMASH like Hulk with the Marvel Thor Ragnarok Hulk Smash FX Fists! The Hulk Smash FX Fists set includes 2 fists so kids can gear up like the gamma powered hero. With 1 electronic fist, kids can practice 3 awesome ways to smash and activate Hulk sound effects. Punch the air to hear motion activated whooshing and punching sounds, or punch down on a hard surface to hear smash sounds and growling. Continue to punch the surface repeatedly to hear smash and roar effects get even more wild! With 1 electronic and 1 non electronic Hulk fist, the Hulk Smash FX Fists let kids imagine muscling up like their favourite gamma green hero and smashing into battle action! Requires 2 x AA batteries (included).