When you start off in a below zero day in these, you feel the cold more than other lined tights in this category, however after a mile or two warm-up the garment starts to work with body heat/moisture to insulate. The compression is perfect, which is a hallmark of 2XU. The knee area could be more integrated with the rest of the leg and not separated as it feels thinner. This is a mens and has accommodation in the crouch area, which creates a funny shaped bag area, which is one reason I knocked a star off, people tend to look there as you run past them. :) Otherwise a keeper for 30 - 40 degree mornings.