Manila Rope originated in the Philippines where its material, abaca, is one of their main, natural resources. Abaca is closely related to the banana plant and is a natural fiber known for its resistance to rot and the ability to absorb water.  For more detailed information on Manila Rope visit: https://www.ravenox.com/products/twisted-hemp-manila-rope
UnManila also known as ProManila, this rope is made with tan polypropylene, a man-made fiber, to make it look more like Manila while adding more resistant features. The synthetic fibers used in UnManila Rope give it protection against rot, mold, mildew, and ultraviolet light allowing it to retain its strength and last longer than Manila.  For more detailed information on UnManila Rope visit: https://www.ravenox.com/products/twisted-unmanila-rope-promanila