A crop of designers, including the rapidly ascending young Alexander Wang, has launched sunglasses lines for spring. This zipper-trimmed take on the classic boxy Wayfarer shape (available starting March 1; $325 at Opening Ceremony, 35 Howard St., nr. Broadway; 212-219-2688) is flattering on pretty much any face and perfectly distills Wang’s aggressive luxury-Americana-classics mash-up style.