【Ultra-Warm & Soft Fleece Lined】- Our V-neck mens long sleeve thermal shirts has soft micro-fleece for warmth in cold weather. With temperature regulation, it keeps you comfortable.【Sweat-wicking & Quick Dry】 - The mens thermal base layer are made of 90% polyester and 10% spandex,it rapidly absorbs and evaporates sweat. Keeps you dry during workouts or daily activities.【Breathable & Odor Resistance.】 - The V-neck of this men's thermal underwear tops offers enhanced breathability. Quick-drying fabric controls odor for outdoor exercises. Stay fresh always.【Reduce Chafing & Flexible】- The mens thermal compression shirt with smooth flatlock seaming reduces chafing. Spandex gives four-way stretch for a snug fit that moves with ease.【Designed for Cold Weather】- Designed for cold weather, this mens thermal top is ideal for skiing,hiking,running,walking,fishing,hunting,or participating in activities like snow shoveling,snowboarding,baseball and more.Keeps you warm and functional.