Absolutely! All the Lupos® shoes of the lines UP 55, LK2, STREET 2 Plus are equipped with the particular Infinergy® System that is able to return more than 55% of energy at every step. The Infinergy® System consists of a special high-tech midsole, a real bearing which, as soon as the foot touches the ground, absorbs the kinetic energy generated by the movement and returns a part at the same instant when the foot is pressed down. The all with great lightness thanks to the elasticity of the material itself.