Every aspect of this design has a meaning. The Psi & Paw make the symbol of PSDS. To read the official explanation CLICK HERE. 

• The garment is a dark grey to symbolize the darkness we all face living with mental illnesses.
• The people in the design are silhouettes to communicate the anonymity of mental illness... it can be found in anyone, even those in which we least expect it.
• The male figure is dressed in formal attire because he looks like he could either be in a suit or in uniform, which shows that even professionals and those in the military can be disabled by mental illness.
• The Psi and human silhouettes are in purple to stand for our mental
  illnesses.
• The paw and the dogs are in white because they are our light
  in the darkness.