Bausch & Lomb PureVision ™ contact lenses are made from a unique material that allows natural oxygen to pass through, allowing your eyes to see rich contrast and detail while still remaining exceptionally comfortable. These PureVision monthly wear contacts are also approved 30 day continuous wear although your eye care professional is best suited to outline a wearing schedule best suited for you.  This lens feels like you are wearing no lens at all.   Free up your busy lifestyle with minimal cleaning and maintenance of the Pure Vision lens.  Why not wear a name brand contact lens at a fraction of retail cost?