Why choose us Improves Blood Flow and Oxygen Supply to Your Muscles, Increase Muscular Power & Endurance Quick Drying and Sweat-wicking Fabric Skin-friendly and Super Stretch, Keep You Comfy in Any Movement Wide Elastic Waistband for Relaxed Fit, Letter Printed Waistband for Fashion Streamlined Design for Body Contour Flat-lock Stitching, Reduce Irritation Caused by Chafing, Allows for Maximum Comfort and Wearability Flatlock Seams Flatlock seams to reduce irritation from chafing for greater comfort during activities Breathabl Wicking sweat away from the body, keeping you cool and dry throughout your workout Main Features: Double stitching cuff and neckline (crew neck). Flat lock seams to prevent chafing and irritation. Excellent moisture control, such as wicking away sweat, quick drying and odor resistant. Purchase 1-sizes larger if you like a somewhat "snug fit", Usually all thermal underwear need to be cleaned often because their so close to your body. Wide application: Base Layer Great to be Wear Alone at Home or Add an Extra Layer of Warmth Under Your Clothes;They can be worn as comfy pajamas on cold, chilly nights. Cold weather mens thermal gear for active sports like hiking bike morcycle cycling snowboard skiing or military & tactical games or hunting and fishing. Dear friends, if you're satisfied with our items, please give us a positive feedback. We will appreciate you very much. If for any reasons that you are not satisfied with our items or service, please feel free to contact us before you are leaving a negative feedback.