Perhaps the most important elements of effective sunglasses are the optical quality and visual enhancement properties of the lenses. Skiers in snow would want the high contrast provided by amber lenses, whereas grey lenses are best for preserving “real world” colours in bright sunlight. Wear prescription eyeglasses? One option is sunglasses designed to be worn over them, like the Bahama‘s style from the Fitover Sun Shields Collection, with grey or amber polarized lenses for glare reduction and a panoramic side view. Polycarbonate lenses are the best choice for high performance sunglasses because they are lightweight, super strong and more impact-resistant than most other lens materials. Polarised lenses also are in demand because they reduce glare from light reflecting off flat surfaces, such as water or a field of snow.