30%. That's the weight savings the new Empire Ultra tank has over its predecessor. Weighing in at a feather-light 2lbs, you won't even realize this tank is there. We have paired it with our tried and true Empire regulator. The proven workhorse reg that is easily serviceable, with rock steady consistent air flow. The Ultra is the tank that takes you to the podium. Features: Ultra lightweight carbon fiber tank, 30% lighter than Basics 68ci Empire regulator utilizing proven Pure Energy technology, the leader in stable air flow pressure and efficiency Dual burst discs for added safety Fully serviceable internals Five year hydro retest cycle Made in the USA DOT/TC approved tanks