Biotrue ONEday contact lenses start and end the day with more moisture than leading daily disposables. They maintain 98% of their moisture for up to 16 hours. You put a lot of demands on your eyes. You start early and keep busy till the end of day. Plus, you’re using digital devices more, which may make your contact lenses feel dry and uncomfortable.Biotrue ONEday is made of a unique material that works like the eye to form a dehydration barrier providing comfort all day long.