Proview Plus 1 Day contact lenses offer the convenience of a daily disposable plus an unsurpassed level of comfort that lasts all day long. This exceptional level of comfort is made possible by PC Technology™, which creates a unique material containing molecules of phosphorylcholine (PC), a substance found naturally in human cell membranes. These molecules attract and surround themselves with water, keeping Proclear lenses moist and comfortable, even after 12 hours of wear. Each box contains 30 daily disposable lenses.