A postural awareness apparatus includes a pad, a signal producing system, and an activator that activates the signal producing system when a compressive force applied to the apparatus exceed a predetermined compressive force. The activator includes a switch having an upper portion, a compressible element having defined therein an opening, the compressible element at least partially surrounding the upper portion of the switch, and a cap adapted to secure the compressible element in a position at least partially surrounding the upper portion of the switch.