Start facing the anchor point, with the straps at mid-length and your hands on the handles.
Step back so that there's no slack on the suspension trainer.
With your arms fully extended and tension on the suspension trainer, lower down into a squat. Be sure to keep your weight shifted back on your heels, maintaining a neutral spine.
Drive your heels through the ground as you jump up as high as you can. Land on your heels with control. This completes one rep.
As you get comfortable with the movement, begin to add more speed, spending as little time on the ground as possible.