Process for making a seamless, reversible two-color jersey, characterized by comprising the following steps: - selection of a raw yarn suitable for being dyed, - knitting with a wholegarment knitting machine using said raw yarn in such manner to make a seamless reversible jersey, wherein said jersey comprises a tubular body and two tubular sleeves connected to the tubular body at the shoulder height; the tubular body having a bottom and a neck; and the sleeves having cuffs, - during knitting, closing and sealing the bottom and the cuffs of the jersey with said wholegarment knitting machine, - during knitting, making pattern tracks on the sides of each sleeve and on the sides of the body of the jersey, wherein each track is made by said wholegarment knitting machine with purl needles performing purl stitch alternated with plain needles performing knit stitch, - dry cleaning of the jersey coming out of the wholegarment knitting machine, - manual finishing of the jersey, wherein the long knitting threads that protrude from the jersey are tied by recreating the knitting generated by the wholegarment knitting machine, - tacking a patch on the jersey to cover the opening generated by the neck of the jersey in order to obtain a totally sealed jersey, - pre-ironing the jersey in order to spread the jersey out and avoid creases, - dyeing the jersey, wherein the step of dyeing the jersey provides for putting the jersey in a tank with rotating drum, wherein the dye color is absorbed differently on the external surface and on the internal surface of the jersey, since the jersey is totally sealed; - removing the patch and the closing of the bottom and of the cuffs. - selection of a raw yarn suitable for being dyed, - knitting with a wholegarment knitting machine using said raw yarn in such manner to make a seamless reversible jersey, wherein said jersey comprises a tubular body and two tubular sleeves connected to the tubular body at the shoulder height; the tubular body having a bottom and a neck; and the sleeves having cuffs, - during knitting, closing and sealing the bottom and the cuffs of the jersey with said wholegarment knitting machine, - during knitting, making pattern tracks on the sides of each sleeve and on the sides of the body of the jersey, wherein each track is made by said wholegarment knitting machine with purl needles performing purl stitch alternated with plain needles performing knit stitch, - dry cleaning of the jersey coming out of the wholegarment knitting machine, - manual finishing of the jersey, wherein the long knitting threads that protrude from the jersey are tied by recreating the knitting generated by the wholegarment knitting machine, - tacking a patch on the jersey to cover the opening generated by the neck of the jersey in order to obtain a totally sealed jersey, - pre-ironing the jersey in order to spread the jersey out and avoid creases, - dyeing the jersey, wherein the step of dyeing the jersey provides for putting the jersey in a tank with rotating drum, wherein the dye color is absorbed differently on the external surface and on the internal surface of the jersey, since the jersey is totally sealed; - removing the patch and the closing of the bottom and of the cuffs.