A prosthetic foot is disclosed for improving the gait and comfort qualities of the amputee that participates in walking, running and jumping activities. The methods include the use of insulation positioned adjacent the lateral sidewalls of the support member. The metal may be heated prior to the force filling step. Graphic designs included on the postcard may be limited edition prints. Also provided are compositions comprising the compounds and methods for using the compounds, for example in labeling a protease in an animal and in visualizing a tumor in an animal. The activation circuitry activates the indicator after a sufficient number of signals are received from the detector circuitry during a given period of time.