​Mattel Jurassic World Muscle Madness Tyrannosaurus Rex Action Figure, T-Rex with Torso Growth & Evolving Tail Spikes, Chomp & Roars, JKG92

​Muscle madness! This very special Tyrannosaurus rex figure has a new and exciting feature never before seen -- her neck, shoulder and upper back muscles actually expand, to make her an even fiercer foe! ​Roarrrrrr! In conjunction with the spectacular muscle growth, the figure has a ferocious chomp and roar! ​Button-activated. The front button activates the muscle growth and chomp and roar. The back button activates more evolution -- the spikes along the tail expand to provide a ferocious defense. ​T. rex forever! This species is a fan-favorite and this edition, with its innovative features, authentic design and posable joints, will add a unique twist to any dinosaur collection. ​4 years and up! This 21.5-inch long Tyrannosaurus rex figure is suitable for Jurassic World fans 4 years and older.