Each towel is 8.5 inches by 5.5 inches when fully unwrapped but, to maximise the amount of your body that can be covered, it's meant to be used folded at first and then unfolded as each exposed part of the towel dries.
I started with the parts of my body I cared about most in case the towel couldn't reach everything but I was easily able to cover my full legs and arms with this sheet, along with my behind and shoulders. (I don't have a problem with discoloration on my chest and stomach, or "bacne," so I skipped those spots and went over my areas of concern extra well instead.)