Tennis is my main sport. I have COMPLETELY replaced my tennis shirt wardrobe with these. They are VERY comfortable and REALLY wick sweat well. I mostly bought the XL size which I usually wear and it fits the figure but is still comfortable to play with. I have a pair in 2XL (only available in a few colors that I like) and they fit a little looser but not so much that they baggy and interfere with good tennis body mechanics. So, depending on how you like to wear your shirt during class, either your normal size or one size up is perfect for me. Good product! I bought a total of 7 in different colors.
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