ABEC5- is a scale defining the precision, with which the bearings have been made, which determines the smoothness of the rolling and the reached speed. PP – polipropylene skid absorbes part of the vibrations resulting from driving on a rough surface. PU - poliurethan wheels, thanks to their elasticity, resistance to rubbing off and distinct hardness, allow enjoying the ride on different surfaces. Parameters chassis: PP bearings: ABEC5 Carbon wheels: 80mm 82A PU fasteners: buckles with protection with protection, velcro, laces max. user weight: 100 kg