The Strut 4 Wheel Package includes the Popular Strut Boot by Luigino. This boot maximizes comfort for skaters, giving them the confidence to perform without arch. Attached to this boot is the Pilot Striker Mark II Frame, made with ultra strong, lightweight heat treated aircraft aluminum. All while rolling on the favored outdoor wheel the Atom Matrix in four vibrant colors! Need even more greatness? Upgrade to the amazingly light P-51 frame and get a free upgrade to Swiss Bearings!