#$%^&*AU2014201839B120150423.pdf#####ABSTRACT Disclosed herein is an item of clothing, in the form of an exercise shirt 10, and a manufacturing method for same. The shirt 10 comprises a front 12 and back 14, and side panels 16 connected between the front and back. The front 12 and back 14 define a first area and the side panels 16 define a second area extending from an armpit area 18 of the shirt to the waist hem 20. The front 12 and back 14 have a thermochromatic material applied thereto to cause them to change colour in response to temperature. The side panels 16 are devoid of thermochromatic material such that they do not to change colour in response to temperature.