Columbia Progressive Rx Sunglasses give you two different distance corrections, with no line separating them, for a smooth and modern look. These Columbia Prescription Sun Glasses are available with frames made from HyperLite 90 or Monel, for a comfortable, lightweight frame that will enhance your look and fit right in with your active lifestyle. These line-free bifocals by Columbia are custom-made to your order, with lenses cut to your prescription requirements by the eyewear experts at L'Amy. Your Columbia No-Line Bifocal Sunglasses are ready to wear right out of the box! Most models are also available with single vision and bifocal lenses.