Icebreaker LifeStyle Fine Ultra Light Over the Knee Dotty Soc Product Description Keep the cold out with the LifeStyle Fine UltraLight Over the Knee Dotty Sock. This sock is made of a fine-gauge merino fabric that provides a stretchy fit and the necessary warmth. The over-the-knee design creates a stylish look and offers good coverage. It has reinforced heel and toe areas for durability. The seamless toe closure prevents blisters and ensures maximum comfort with every step.