Abstract: A cloth for swimsuits includes synthetic fiber multifilament yarns and elastic fibers, wherein a front surface and a back surface of the cloth have a water-repellent finish(es); bumps and hollows are formed on the back surface; the bumps and hollows on the back surface have a height difference of 150 ?m to 650 ?m; and the hollows have a width of 100 ?m to 5000 ?m.

Abstract: A cloth for swimsuits includes synthetic fiber multifilament yarns and elastic fibers, wherein a front surface and a back surface of the cloth have a water-repellent finish(es); bumps and hollows are formed on the back surface; the bumps and hollows on the back surface have a height difference of 150 ?m to 650 ?m; and the hollows have a width of 100 ?m to 5000 ?m.

Abstract: The water-permeability stretch knitted fabric has a multi-layered structure including at least two layers, namely the outer layer and the inner layer, wherein 30% or more of the outer layer of the knitted fabric is accounted for by composite fiber multifilament yarns composed of two types of polyester polymer materials adhered to each other side by side in the fiber's length direction, the water-permeability of the knitted fabric being such that both the water absorption back-and-front moisture content ratio and the water absorption back-and-front diffusion area ratio between the outer layer and the inner layer are two or more, and the average for the stretch percentages and that for the stretch recovery percentages in the longitudinal and transverse directions of the knitted fabric being 55% or more and 60% or more, respectively.

Abstract: The water-permeability stretch knitted fabric has a multi-layered structure including at least two layers, namely the outer layer and the inner layer, wherein 30% or more of the outer layer of the knitted fabric is accounted for by composite fiber multifilament yarns composed of two types of polyester polymer materials adhered to each other side by side in the fiber's length direction, the water-permeability of the knitted fabric being such that both the water absorption back-and-front moisture content ratio and the water absorption back-and-front diffusion area ratio between the outer layer and the inner layer are two or more, and the average for the stretch percentages and that for the stretch recovery percentages in the longitudinal and transverse directions of the knitted fabric being 55% or more and 60% or more, respectively.

Abstract: The present invention relates to a racing swimsuit and provides a racing swimsuit capable of reducing surface friction resistance and frictional resistance of turbulence in water. The present invention can reduce the surface frictional resistance in water by the provision of a water repellent region on the surface of a swimsuit as well as makes it possible to reduce the frictional resistance of turbulence occurred on the surface of the swimsuit of a racer by the formation of a plurality of fine grooves parallel to a body lengthwise direction.