Life Fitness Belt: Walking; Np7131; Optima LIFE BELT: WALKING; NP7131; OPTIMA £259.69 2 in stock. Life Fitness Belt: Walking; Np7131; Optima quantity Add to basket SKU: 0K75-01024-0000 Category: Life Fitness Parts More Info Description LIFE BELT: WALKING; NP7131; OPTIMA