Boston Advance® Conditioning Solution dual disinfecting system delivers excellent protection against harmful microorganisms. Includes a patented cushioning system to soothe your eyes and provide lens wearing comfort. Boston Advance® Comfort Formula Conditioning System have been specifically developed to provide the unique compatibility and effectiveness that your RGP (rigid gas permeable) lenses deserve. Boston Advance Conditioning Solution and Boston Advance Cleaner are easy to use and provide lens wearing comfort.