"Best-dressed" seniors at America's leading colleges are definitely against the clumsy old-fashioned fly. Though they prefer the smooth flat slide-fastened fly, they are also opposed to the uncovered zipper which displays a strip of bare metal. Kover-Zip, the invisible seamline closure demanded by good taste, has won approval in college from coast to coast. Here are a few typical comments on Kover-Zip by college they selected as "best-dressed":