Im 5â4â 165 lbs the medium fit true to size for me, really hold you in nicely with compression that is still comfortable at the same time. I wore these in 90* heat and you couldnât see the sweat. Loved that there is no front seam & appreciated the top band at the waist as they stayed put & didnât slide down. Perfect for gym, running, cardio, or any exercise you prefer.