Frames designed for inline artistic skating have three or four rockered wheels with a toe stop or toe "pic" placed at the front. Rockered wheels (wheels which are arranged at different heights so that the baseline of the wheels forms a curve instead of a flat line) are more suitable to simulate the curved blades on ice and achieve deep edges needed to perform footwork and spins. Popular inline frame brands include Snow White, PIC, Roll-line, Golden Horse (GH Skates), and STD Skates.