Last few decades have seen composite materials being used predominantly in various applications. Many type of natural fiber have been investigated for their use in plastic including jute, wood fiber, rice husk, cane, grass reeds, coir. Their number of application have grown steadily. Natural fibers are alternate resources to synthetic fiber. Natural fibers are cheap and renewable .In this project work mechanical properties are studied of the composite material which is reinforced by fibers extracted from SIDA ACUTA plant and vinyl ester resin is used. The natural fiber is extracted by tank retting process. To improve the mechanical properties SIDA ACUTA fiber is hybridized with carbon fiber. The composite was made by hand lay-up method which is economic and easy process for making composite material. The mechanical property like impact strength, hardness test were carried out on composite specimens to find out its sustainability. Their strength were compared with composite made up of jute fiber. Also the water absorption capacity recorded