Dimensions taken when bracers are laying flat. Wrapping thick leather around your arm uses up about 3/8"; therefore, size medium is great for someone with a 7" wrist. (Please note that Widest Point measurement is 6 inches up from the wrist for sizes Medium and Large, and 5 inches up from the wrist for size Small.) Custom wrist and forearm size adjustments are available. A pattern making fee of $5.00 applies to custom sizing requests.