I stopped looking for a humpback whale t-shirt, when I saw this one here. Since I live in Hawai'i I picked the lightweight 100% cotton, and it's feels super comfy and cool. This is my 3rd purchase and I've never been disappointed. I love this brand, I love the Cause, and I love the designs.
I'm 5'8" 155 lbs and I picked Medium. It fits perfectly!