Sora's Keyblade with Hidden/Concealed 16" Blade!
Kingdom Hearts Fantasy Key To The City Metal Sword
Lightweight aircraft‐grade aluminum makes up the structure of this Sora Hearts Keyblade. 
The benefit is an enormous reduction in weight, while maintaining the strength and durability for cosplay and conventions. 
Do not confuse this authentic Keyblade for an imitation made of heavy material. 
Weight of this Keyblade is around 2 pounds (about 1kg), less than a liter of bottled water!