The POWERSLIDE Phuzion Radon Black White 80 inline fitness skate is the pinnacle of comfortable performance. The shell of the Phuzion Radon Black White 80 is made of reinforced glass fiber. providing a strong. stable base complemented with a cuff that delivers excellent support. This capable fitness skate also includes a Powerknit upper with TPU welded reinforcements to ensure a snug. comfortable fit. The POWERSLIDE Phuzion Radon Black White 80 is comfortable even on the longest of skating tours thanks to the fixed liner with dual density foams and a heel lock keeping your foot comfortably in place. Designed around the famous TRINITY 3-point mounting system. you get a low center of gravity and excellent power transfer while reducing vibrations. Complete with a lightweight. high-performance Elite cast aluminum frame rolling on 4x80mm POWERSLIDE Infinity wheels and WICKED ABEC 5 bearings. the Phuzion Radon Black White 80 is the ideal fitness skate mixing speed. comfort. performance...and a whole lot of fun.