2016 Atom Juke...The Evolution ContinuesIncreased Grip & Roll - Better Plow Stops - More Control on Your SkatesWe've taken the HIGH-PERFORMANCE URETHANE of our original, HUGELY popular Juke and 'tweaked' the chemistry with proprietary ingredients to meet the demands of today's modern skater.Say hello to the NEW and IMPROVED Atom Juke!#JUKE NOWHollow Core Technology with Molded Power LipSize: 59mm x 38mm