A set of three PopSockets with different designs is displayed. The first PopSocket has a white background with the word 'RUN' in black, followed by 'H' in white, and 'RUN' in black again. The second PopSocket has a white background with the word 'TRAIN' in black, followed by 'H' in white, and 'TRAIN' in black again. The third PopSocket has a white background with the word 'ACTIVE' in black, followed by 'H' in white, and 'ACTIVE' in black again. Each PopSocket has a white border around the design.