This shirt with a standing collar is characterized by its taut yet comfortable texture and zip-up design. It is made from thin cotton/linen shirt fabric with a rich slub texture. The fabric undergoes low-temperature mercerization processing once to enhance its firmness, tautness, and crispness. By slowly garment-dyeing the shirt at a low temperature after sewing, the taut fabric takes on a soft texture akin to crumpled paper, with a comfortable feel against the skin.