Material: HEMA Diameter (mm): 14.5mm Base arc: 8.5mm Water content: 40% Thickness (mm): 0.06-0.15mm Shelf life: disposable contact lenses once a year Occasions: parties, role-playing, daily makeup, bars Brand new, high quality, won't do any harm to eyes. All as eye color only lenses, you can not choose energy. This contact lens is wear annually, can be wear for one year after opening. First you must buy a bottle of Liquid Lens Care Solution Mix at your local store, before using, you must leave the contact lenses in the care solution for at least 6 hours and clean competitively every time.