Very good. Warm, soft, and comfortable. Due to my job (postman), I spend many hours on the motorcycle and during winter, I need something warm to protect me from the harsh weather conditions. I wear the top part for 24 hours, even as pajamas at night. I wear the bottom part as pajamas at night and during the extreme cold, I wear it under my pants on the motorcycle where it does a great job. However, they have one disadvantage. If worn by someone who does manual labor or is constantly moving, they will sweat a lot and the sweat remains and does not come out of the thermal layer.