Got a pair for Christmas the pants are not lined, so they are not for real cold weather. The shirt has a liner in it, it is a little warmer than the pants. They would not be bad to hunt early spring in but may get hot later in the season, But in all I like them. I hunt in the tibbee pants and they are thinner than the chamois by far but have ripped two pair, so I'm trying the cotton twill this year.