Why do I feel a tingling sensation in my legs?

A tingling sensation in your legs indicates that the gel pads are over your hip-bones.

Moving the two side gel pads upwards and inwards on your waist (i.e. towards the centre of your body) should prevent this.

Remember to pause or switch off your controller before adjusting the belt or gel pads.  You can do this by pressing the Power button to switch it off.