“SLS” stands for Super Linear Slic, which is exactly what this cable is. This cable features the original BMX Linear Slic Kable® housing to prevent binding when the bars are rotated & factory installed ferrule ends with the inner volcano shape to prevent housing blow out; A Linear Slic Kable® standard since 2008. Odyssey have added a specially coated inner wire for ultra low friction, a proven feature resurrected from their once famous Brakeline cables as well as a Gyro® lug included at one end of the inner wire for use with detanglers, & a standard brake barrel at the other for levers. Available in Black & White 55% Stronger Than Others. Ultra Smooth. Great Brake Performance