Shrewd structures are gadgets created out of keen materials fit detecting upgrades, reacting thereto and returning to its distinctive state once the boosts is expelled. Global marketplace for conformal covering on gadgets advertises the market is got to develop at a CAGR of seven from 2015 to 2020. CAGR (2016-2021) of 6.9%, driven by various ventures, like car, bedding and furniture, building, development; bundling; hardware and footwear. Smart materials are common name for a good group of various substances. The general feature of all of them is that the incontrovertible fact that one or more properties could be significantly altered under controlled condition. The present age is taken into account to be the smart materials era. Earlier, smart material was defined because the material, which responds to its environments during a timely manner. Different applications of smart materials in various fields also are being discussed ranging from engineering to this environment. With the event of fabric science, many new, high-quality and cost-efficient materials have inherit use in various field of engineering. In the last ten decades, the materials became multifunctional and required the optimization of various characterization and properties. With the last advancement, the idea has been proceeding towards composite materials and recently, following evolutionary footstep is being inspected with the idea of smart materials. Smart materials are new generation materials surpassing the traditional structural and functional materials. These materials possess adaptive capabilities to external stimuli, like loads or environment, with inherent intelligence. The stimuli might be pressure, temperature, electric and magnetic fields, chemicals, hydrostatic pressure or nuclear radiation. Smart materials also can be classified into two categories i.e., either active or passive. On the opposite part, the materials, which aren't active, are called passive smart materials. Though they are smart, still they lack in the intrinsic ability to convert energy. Fiber optic material may be a exemplar of a passive smart material. These types of materials can act as sensors but will not act as actuators or transducers. Smart materials find a good range of applications thanks to their varied response to external stimuli.