Our thermal underwear stands out with its dual brushing of luxuriously soft HeatWeaver® yarn, ensuring maximum warmth and comfort. With our 'perfect stretch' design, you'll enjoy unrestricted movement, while the 'flat comfort seams' minimize bulk for a smooth fit. Additionally, our moisture and odor management technology enhances comfort throughout the day. It's worth noting that while our ULTRA LITE™ base layers prioritize lightweight warmth, they do not include moisture control features. However, our other base layers still offer this benefit. Moreover, we're excited to introduce our new line of high-performance ceramic-infused base layers, offering a lightweight feel similar to ULTRA LITE™ but with enhanced warmth comparable to our ORIGINAL™ base layers.