I've used these in both active and stationary activities in 20deg weather and my legs were always comfortable. Not too hot and not too cold, just the perfect temperature for whatever I'm doing.

These long johns fit great, feel great, and are extremely warm. I wouldn’t hesitate wearing these in to the woods in any temps with just a wind stopper pant. These were part of my first First Lite order and I am impressed.

If you don’t do well in the cold you would do well to own these! I purchased the long johns and quarter zip top and couldn’t be happier with these base layers.

These long johns are super comfortable and incredibly warm. They fit true to size. Nice and snug so they can fit under any other pants, but not crazy tight so that they are uncomfortable. Only negative is the waistband has worn out after only 2 seasons of wearing them. They sag a bit, but I make due, not enough to make me regret buying them. Have an older pair of other First Lite long johns and have not had the same issues with the waistband on them.

The furnace long john and furnace Henley are the warmest base layers I’ve ever wore. The products are excellent quality. Wore them in the stand with temperatures in the 20s with a mid layer and bibs stayed very comfortable even with snow falling.