Hot Chillys La Montana is our king of the mountain for warmth. The fabric of these men's thermal pants consists of brushed, micro-denier polyester fleece for lighter weight and greater strength and durability. A unique product for those demanding the warmest possible under layer for winter or mountain sports, these winter base layer pants are guaranteed to keep you toasty warm!Designed with your comfort in mind, these thermal pants wick away moisture, offering long-lasting warmth and breathability. Whether hitting the slopes or tackling cold weather tasks, La Montana will provide the perfect thermal base layer for your outdoor wardrobe.