A thermally insulative, flexible, durable reflective exhaust pipe sleeve and method of construction thereof is provided. The sleeve includes a knit, heat-resistant inner layer, a reflective metallic outer layer and an intermediate layer sandwiched between the inner and outer layers. The inner layer is constructed having an inner surface exposed to an inner cavity of the sleeve and the outer layer is constructed having an outer reflective surface exposed to the surrounding environment. The intermediate layer is constructed of a woven material and is sandwiched in abutment with the inner and outer layers. The outer and intermediate layers are convoluted, while the inner layer is cylindrically tubular.