i was looking at getting a rash guard and they say small, medium large etc. but doesnt have a sizing chart. in under armor i wear a large. i am 5'9 155lbs and was wondering on what size i needed that would fit the best.
from personal experience my underarmour are the same size as my rashies.. xl,, you should be fine with the large.
well, ive only tried two. Im about 5'7, and 135lbs the medium hayabusa's are kinda loose, but still a decent fit the medium full contact fighter I tried was so damn tight
I usually have to go up a size in rashguards from my normal t-shirt size, but I think it also depends on your body type. I"m short and stocky, so the compression shirt fit winds up being too tight around the shoulders and arms if I get my regular shirt size.
I too am short and stocky 5'6'' 180 lbs Buying rash guards one size above my regular t-shirt size (XL instead of L) has worked out just fine for the 2 Tapout rashies I own