Typically water ski ropes are made from polypropylene that will stretch 2-3% of its length under normal conditions.

Water ski ropes require a slight bit of elasticity that can provide give as the skier changes his or her speed and goes from one turn to the next.

Ski ropes tend to stretch a little more than wakeboarding ropes as this stretch acts as a shock absorber, when the skier crosses the wake in between turns. Therefore these ropes are generally made from polypropylene but some riders still prefer no stretch