Heat Holders - Men’s Short Sleeve Thermal T-Shirt If you’re in need of casual wear but with a bit more warmth for the colder days, Heat Holders Performance Short Sleeve T-Shirt is a supremely comfortable and practical t-shirt, designed and built for all-day wear. The technical fabric features multi-directional stretch, for ease of motion and shape-retention; meanwhile, the exceptionally soft finish inside and out ensures next to skin comfort. Also included are side panels and a comfort armhole design for an exceptional fit and enhanced comfort. They also include moisture management which means even though these t-shirts are designed for warmth and keeping warm air close to the skin, they won’t cause excess sweat as they can wick away moisture from the body. The flat seam construction is designed in such a way that it reduces irritation against the skin which adds to the overall comfort of the shirt, even if you end up doing a bit of hiking or exercise. These thermal T-Shirts are available in Black or Grey and are made from: 88% Polyester, 12% Elastane. They have 6 size options: XS, S, M, L, XL and XXL and are Machine Washable. Extra Product Details Heat Holders Men’s T-Shirt - Micro Brushed Fabric - Anatomical Fit - Flat Seam Construction - Moisture Wicking Properties - Hybrid Crew Neck - Ideal For Casual Wear - 2 Colour Options - Enhanced Comfort - 6 Sizes Available - Machine Washable