<p>Blended fabrics occupy a special place among textile products manufactured in our country, which have a high export index. Scientific research was conducted on the production of fabrics of mixed composition, the study of their physical and mechanical properties, and the assessment of quality indicators. Yarns made of natural fibers provide hygienic properties to the fabric, and yarns made of synthetic fibers improve its performance properties. Theoretical studies were conducted on the design of raincoat fabrics of mixed composition using the unique features of two-layer complex weaves, with different colors and properties on the front and back sides, and the composition of the warp and weft threads for the samples was selected. When designing blended fabrics, cotton yarns with a linear density of 29.4 tex were used on the warp, and cotton threads (29.4x2 tex) and nitron threads (40 tex) were used in the weft yarns in a ratio of 1:1. The thickness of the warp and weft threads in the new mixed-composition raincoat fabric was studied based on the characteristics of other raincoat fabrics, while keeping the thickness of the warp and weft threads the same as in the new fabric. The possibility of manufacturing prototypes taking into account the total percentage of filling of various fabrics developed on the basis of existing raincoat fabrics was substantiated.</p>