Men’s Journal aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. It’s been a long, long time since the holiday classic Christmas Vacation made the turtleneck (technically, a mock turtleneck) sweater look ridiculous . So long, in fact, that turtlenecks have gone all the way back to being cool again. Let me explain: The turtleneck, originally worn primarily by men, was once a potent symbol of power and...