To measure this just take a measure tape and see what fits you.
You need to choose the sizing according to the fit you want.

PLEASE NOTE THAT EVEN IF WE RECOMMEND A HEIGHT YOU SHOULD MESURE YOUR WAIST, AND CHECK FROM YOUR WAIST DOWN THE LENGHT

THE FIT IS ABOVE THE KNEES

WE RECOMMEND SIZING UP.

The perfect size of the T-shirt will be the same or bit smaller than the one you choose for shorts!