Tested by New York City athletes and made in Japan, the District Vision Explorer Kaishiro Black Sunglasses are ideal. The District Sky G15 lens will provide you with maximum sun protection and only allows 11.57% light transmission. This frame features D+ lens technology, which is an adjustable hypoallergenic rubber nose pad and temple tips with a titanium core. These sunglasses are some of the lightest and most comfortable sports frames out there.