Boston Advance Care Lens Solution Product Information The Boston Advance Care system for gas permeable lenses. The package contains: * 1 fl. oz. bottle of Boston Advance Cleaner * 3.5 fl. oz. Boston Advance Conditioning Solution * Folder containing 4 sterile 0.01 fl.oz. single-use dispensers of Boston One Step Liquid Enzymatic Cleaner * Boston lens case A patented comfort system that provides maximum lens comfort by cushioning the lens upon insertion and coats the lens for complete uniform wetting and comfort throughout the day.