I ordered 2 ski sweaters via Keller Sports. One M and one L size. I have send back the L size, but Keller would not refund the sweater. They said did not receive it. Believe me I have send the sweater back as I don't need 2 sizes, and I was stolen for 120,- euro's by Keller.
My advice don't order anything with Keller if you are not sure the size fits.