INTRODUCTING KYBER CORE: Hasbro's officially licensed line of Star Wars Lightsabers expands with Kyber Core, featuring a translucent cover that exposes the innerworkings of the Lightsaber and its internal power source, the kyber crystal, CHARACTER-INSPIRED DESIGN & DECO: Imagine harnessing the power of the Force with the Lightsaber Forge Kyber Core Luke Skywalker Lightsaber, inspired by Luke's Lightsaber from the Star Wars Galaxy, CREATE THEIR OWN LIGHTSABER: This non-electronic Lightsaber toy is comprised of four parts -- an extendable green blade, cap, cover, and core -- so kids can assemble their own Lightsaber for imaginary duels, EXTENDABLE AND PORTABLE: Featuring an extendable blade that flicks open and collapses down for easy and portable play, this roleplay toy makes a great Star Wars gift for 4 year old boys and girls.