Boston Advance Contact Lens Solution 30 ml Solution - EachContact Lens Solution Boston Advance 1 oz. Solution Boston Advance contains a system of multiple cleaning and friction enhancing agents that clean your lenses and prevent the accumulation of stubborn protein and lipid deposits which can impair the wearing comfort of your contact lenses Heightens wearing comfort by removing lipids and proteins Leaves your lenses clean, clear and ready for the disinfection step For rigid gas permeable contact lenses 30