H2H Mens Casual Plaid Long Sleeve Shirt Fashion T-shirts RED US L/Asia XL (KMTSTL0320) It depends on the material, but most of the styles are tagged in Asian size and slim fit so sizes are one to two sizes smaller than US or EU size. If you are not sure about your size, please refer to the size chart and careful consideration before your decision. US X-Small (Asia S) - 39 / 17 / 25.5 / 29.5 US Small (Asia M) - 41 / 17.5 / 26 / 30.5 US Medium (Asia L) - 43 / 18 / 26.5 / 31.5 US Large (Asia XL) - 46 / 19 / 27 / 32.5 US X-Large (Asia XXL) - 49 / 19.5 / 27.5 / 32.5 US 2X-Large (Asia 3XL) - 52 / 20.5 / 28 / 32.5 US 3X-Large (Asia 4XL) - 56 / 21 / 29 / 32.5 US Small (Asia M) - 40 / 17 / 26 / 30 US Medium (Asia L) - 42 / 18 / 26.5 / 31 US Large (Asia XL) - 45 / 19 / 27 / 31.5 US X-Large (Asia XXL) - 48 / 19.5 / 27.5 / 33 US 2X-Large (Asia 3XL) - 52 / 20 / 28 / 33 US 3X-Large (Asia 4XL) - 56 / 21 / 28 / 33