Inspired by roller derby queens who are not afraid to body check as they take a curve, meet Nepetalactone. Light in weight but not a lightweight. In colors that your Oma wore while her dance card filled up full. CADDIS progressives are for people who need to see stuff up close and far away. It's that simple. Our lenses progress from no magnification at the top, to your chosen magnification at the bottom. All in one lens. No more switching glasses stacked on your head. CADDIS Progressives are true progressive lenses (not blended bi-focals). As with any progressive lens, you may need up to a week for your eye to adjust to them. Be patient friends, the results are worth it.