This is an Under Armour HeatGear Armour Compression Short Sleeve Shirt. It's designed to quickly wick away sweat and keep you cool and comfortable. Key Features: Brand: Under Armour Product Line: HeatGear Armour Fit: Compression (a tight fit) Function: Excellent sweat-wicking and breathability, comfortable for all-day wear. Uses: Suitable for various sports such as training, baseball, soccer, and golf. Size: Small Shipping will be via Yu-Packet Post, carefully packaged.