I walk year round in the early hours of the day and have found that this frosty pant is the ticket to warm legs. Last year, I wore the WINTER BELAY and loved it. So when I attempted to order more, I found it had been replaced with the Frosty Belay. Not a problem! The Frosty Belay has a delightfully warm fleece-like lining which is not the least bit bulky. I'm in Montana on vacation and have worn them almost everyday. They are stylish, wrinkle resistant, and so comfortable. Now, you just need to add more colors!!! Merrell pants are the staple of my wardrobe. I have them in every color and even in another size since I lost weight. They are moderately priced and seem to never show signs of wear. Love them!