Slider is a technique that uses Shinsoo boost one's movement speed for a brief period of time. When using this technique, the user gains faster physical mobility and control to enable them to side-step or dodge opposing attacks to the point where it can seem that the user "slides" under or through Shinsoo attacks.
The main usage is for one to shift oneself into a better offensive position while the user is in a defensive stance e.g. counterattack. However this is not optimal for racing against someone, since the technique is not pure acceleration and only lasts for a short time. Due to the increased speed and use of Shinsoo afterimages of the user's movements are produced.