Biomedics 1 Day Extra contact lenses are manufactured by CooperVision one of the World's leading manufacturers. These Biomedic lenses are designed specifically to give exceptional wearer comfort. This is achieved through a high material water content of 55% combined with a very high oxygen permeability. These two factors combine to ensure all-day wearer comfort. Daily disposable lenses are the most convenient as no daily cleaning is required. Simply discard at the end of each day and fit a new pair each morning. First, check with your optician before changing brands or lens types. Also avaliable in the Biomedics range: Biomedics 1 Day Extra 90 Pack. Other ranges avaliable from Coopervision: Clariti, Biofinity, Proclear.