S-Lines X Series Slalom Rope Slide LoopS Lines X Series Slalom Rope Slide Loop The S Lines X Series Slide Loop is S Lines' newest tournament slalom water ski rope, built around a next gen yarn and a modified braid layup that fine tunes recoil timing for a stiffer, more evenly balanced response than previous generations. The X Series is positioned for short line skiers who want a rope that responds right out of the box without a long break in period. Despite being stiffer than earlier S