Incorporating technologies from POWERSLIDE’s race-proven 3X series of inline speed skates, Core Performance Black 4x90 is a high-quality skate at an accessible price point, making it affordable while giving you all the tools you need to reach new speeds on the road or the race track. Light and responsive, the shell of the Core Performance Black 4x90 inline speed skate is constructed out of a combination of carbon, glass fiber, and basalt. The upper portion of the boot incorporates microfiber alongside attractive black matt nano-grade leather, providing a sleek style and improved comfort. Mounted to the boot with the reliable 165mm mount, this capable inline speed skate has a precision POWERSLIDE Core Performance that’s light, strong, and delivers excellent power transfer to the 4 x 90mm Infinity wheels and smooth WICKED ABEC 9 bearings. Fast, feature-packed, stylish, and affordable - the POWERSLIDE Core Performance Black 4x90 is the ideal race skate for kids and beginners.