I just received this shirt in white. As others said it is very sheer, so youll need a cami underneath. The fabric is very light, and the back vents are a plus. Sleeves are long but roll up fine for me.(I have short arms) I ordered a Medium and it is looser than other styles Ive ordered from Columbia. I am 53, 130 and the M is roomy, which I prefer since Ill wear it as a light shirt over a T-shirt. Overall the shirt is exactly as Id hoped. I haven't washed it yet so cant say how it will come out- hence 4 stars instead of 5.