Preference Standard contact lenses are planned replacement contacts designed for optimum eye health and deposit resistance. Lenses are tinted for easy handling. Preference Standard contact lenses are virtually maintenance free making them the perfect choice for first-time lens wearers or anyone on the go. Their tetrafilcon A lens matiral makes for a very durable lens and is alos deposit resistant keeping the comfortable for the long haul. Enjoy outstanding comfort, optimal eye health, and superior handling with Preference Standard.*Open boxes or vials cannot be returned or exchanged.