Fujigomu Nurse Replacement Insoles Static Electricity Type Size: 29.0 cm Gray Insoles exclusively for Fujigomu Nurse No. 4700 / 4800 / 4966 / 690 / 770 Equipped with an anti-static function. Free yourself from that annoying static shock. 3D insole with heel cup prevents lateral movement. Prevents lateral movement and reduces fatigue from standing work. "Poron," a globally renowned shock absorber, absorbs and cushions impacts. Reducing the impact on the heel alleviates fatigue even during long hours of standing work.