Kaenon’s new X-Kore polarized sunglasses come in black or white curved frames and in a wide choice of lens tints, some for sharpening contrast in overcast conditions and other others for knocking down glare off the water. The arms have a hole at the tips for attaching a retaining strap. All the lenses are Kaenon’s SR-91 that have the clarity of glass but the strength and light weight of polycarbonate and offer superior impact and UV protection. They can be custom ordered to fit a corrective prescription. $249, www.kaenon.com