Sweater edit. The Killian is a timeless unisex turtleneck, made for the city or the slopes. Modern and bold, this is a must-have piece that transcends trends. There's a reason why this sweater is itch-free and cruelty-free. We worked hard to formulate a luxurious blend that is soft to the touch, flexible, and long-lasting. So cozy you’ll wonder why you used to wear wool.