ok, there are two numbers u need to worry about when selecting your reflector, the reflectivity(notice, this is proly not a word lol) and the amount it takes in... lol

mylar(space blankets) are about 92-8=100
92% is reflected,8% is taken in, and disassembled into other formes of energy(heat,sound(dought it),yata yata)
pay attention to school shit lol:rasta: