These Color Lenses are durable for 1 year (made from gelatinous). They have an iris countour.These lenses are for cosmetic use (there is no need for a number) and also for correction of myopia (short-sightedness) or long-sightedness (with a number). The durability of these lenses is for 1 year after opening the package.Material: Polymacon 62%, Water Content: 38%, Diameter: 14.2 mm,Base curve: 8.7.view the following video : HIDROCHARME ICE Video