Shimmery Men's 2 Pack Short Sleeve Running Fitness Workout Compression Base Layer Shirt Top 90% Polyester /10% Spandex 4-Way Stretch Mixed color design, and flatlock stitch in the seam, look more Fashion. The tight design makes you look more Muscular and excellent body shape. Perfect for your various Indoor activities and Outdoor excursion. Lightweight and Moisture-wicking fabrics keep you Dry and Comfortable. Our size is Smaller than U.S size, When you receive an different Asia tag. It is the right size for you. If you prefer a looser fit, Go up a size.