The latter method is considered one of the oldest and most effective methods, especially for directly protecting the skin of the body, so many studies have been interested in determining the levels of sun protection in relation to the properties of fabrics used for this purpose.

There has been an increasing demand recently for the use of natural fibers that combine the properties of physiological comfort and functional performance during use, and the most famous of these fibers for achieving these properties and sometimes even outperforming the usual natural fibers are tensile and modal fibers. Given the physical and mechanical properties of this type of modern fiber that make it superior to its counterparts of traditional natural fibers, the research turned to benefit from these materials and employ them in the production of fabrics that resist ultraviolet rays, where eight samples were produced using the woven method using two textile materials for the warp threads, namely tencel and micromodal, and polyester was used as the warp threads. Also, the produced double fabrics depended on four textile structures, namely Mubard 1/3, Atlas 4, Mubard 2/2, and Extended Sin 2/2. Laboratory tests were conducted on the implemented samples and the results were compared to determine the best implemented samples in terms of fulfilling the performance properties and resistance to ultraviolet rays.