A Raman amplifier, system and method using a plurality of pumps configured to pump light into an optical fiber so as to Raman-amplify an optical signal propagating through the optical fiber. The polyester layer provides a pad area for association with the buttocks of a cycling individual, two side pad areas for association with the upper inside thighs of the individual, and a pad area for association with the lower abdominal area of the individual. A surface treatment having plural layers of dichroic materials is formed on the substrate.