The ladies, long sleeved T-shirts I recently purchased arrived at super-human speed, which amazed me. Being a size 12, I expected a size medium to fit well as is usually the case. However these T-shirts are very odd. The body fits well and is comfortable but the arms are so narrow that they compromise the blood supply! I do not have fat arms or unusually short ones either, but these T-shirts have been designed for people with normally sized bodies and arms 4-5inches longer than mine and with no flesh at all over the Humerus, Ulna or Radius bones. Regarding constriction over the lateral and medial epicondyles.....well, we just won't go there! My verdict is; these are for fat stick-insects!!