MIDWEIGHT BASE LAYER FOR YOUTH - The original 'Pepper' in the Hot Chillys Peppers Collection, Pepper Skins are your standard, everyday, dependable thermals; Pepper Skins jersey knit base layer is single jersey knit with slight brushing for a soft, lived-in feel MOISTURE TRANSFER FIBERS - This thermal crewneck long sleeve shirt is manufactured with MTF polyester fibers, which work to transport moisture away from the skin by employing hydrophobic yarns to wick away perspiration, thereby keeping you dry and comfortable LIGHTWEIGHT BREATHABLE THERMAL SHIRT - The breathable material and lightweight design ensures that you stay cool while still enjoying superior insulation even in cold weather; it's the perfect choice for outdoor adventurers and everyday wearers alike WARMTH FACTOR 6/10 - Ranked from Mild to Hot, the Warmth Factor Thermometer tells you how warm each of our products is; warmth Factors 6, 7, and 8 are considered Midweight and are very popular for most cold-weather activities; spun polyester is slightly brushed for extra softness VERSATILE FOR SPORTS OR EVERYDAY ACTIVITIES - This log sleeve base layer with crew neckline with binding is engineered to stretch and move with you, providing all over fit, warmth and expedited moisture movement; designed with a looser fit that lies gently on the skin without binding; flat seam construction ensures seam strength and longevity HOT CHILLYS Youth Pepper Skins Crewneck Moisture-Wicking Soft Midweight Thermal Long Sleeve Base Layer Top, Black, X-Large