Calvin Klein Grey Square Unisex Sunglasses CKJ23659SN 002 55

What you are looking at is Calvin Klein Grey Square Unisex Sunglasses CKJ23659SN 002 55, a unisex pair of sunglasses. Polarised lenses cut glare off roads and water, at the cost of making some phone and dashboard screens look patchy. Worth wearing on any bright day, not just in summer — UV reflects hardest off water, snow and wet roads. A discounted listing is only a saving if it is the same size and edition as the one beside it. Store them in a case rather than face down, and keep them out of a hot car, which warps frames and lifts coatings. Whoever is cheapest today may not be tomorrow, so it is worth looking again before settling on the best deal.