Hydrogels are cross-linked, three-dimensional (3D) networks of polymers that can absorb and hold a lot of water. Loosely cross-linked hydrophilic polymers known as superabsorbent polymers (SAP) are capable of swelling, absorbing, and holding huge volumes of water or other biological fluids. Hydrogels are classified on various basis i.e. source, configuration, polymeric composition, cross linking, physical state, morphological and charge. Hydrogels have several properties such as mechanical, stimuli effect, self-healing, biodegradability. Hydrogels are used for drug delivery systems, tissue engineering, wound healing, gene delivery, electrical conducting, purification of water, agricultural sector, decontamination of organic waste, artificial skin. Hydrogel materials have various applications in biomedical and engineering applications, from wastewater treatment and soft robotics to regenerative medicine, due to their customizable characteristics and adaptable production techniques in textile industry. Lamination of hydrogel onto the fabric makes it fire retardant. Heavy metal removal/Dye removal from aqueous solutions is another application for smart Polymeric Hydrogel (PHG) materials. The global hydrogel market size is expected to be worth around US$ 37.98 billion by 2030 from at US$ 22.45 billion in 2021, growing at a CAGR of 6% during the forecast period 2022 to 2030.