Cryogenics is the study of very low temperature (below -150 °C, -238 °F or 123 K). Cryogenic treatment is a treatment process widely used in recent years to enhance the material properties without sacrificing other properties at the same time. Cryogenic treatment, a supplementary process to conventional heat treatment, involves deep freezing of materials at cryogenic temperatures to enhance the mechanical and physical properties. It is a onetime permanent treatment which affects the whole section of the component. It is not like the coatings of superior materials over other metal surfaces that only affects the surface of components. Cryogenic treatments are proved to be a good way to reduce the retained austenite content and improve the performance of materials by improving its marten site structure. Objectives of cryogenic treatments are to increase material’s strength, hardness, wear resistance, ductility, & toughness, to obtain fine grain size, to remove internal stresses, to improve mach inability, cutting properties of tools, to improve surface properties, electrical properties, magnetic properties, and reduces tool consumption and down time for the machine tool set up, thus leading to cost reductions. This paper reviews the use of cryogenics as an engineering tool for textile apparels and metals. The summary of this review paper tells about the properties improved due to the cryogenic treatment and the reason behind them.