Wrinkle Free Black What is a wrinkle free shirt? How does it work? DETERMINANT Wrinkle Free White White Regular Fit Shirt. The Wrinkle Free Sharp Shirt is engineered for a sleek, modern aestheticfeaturing bonded seams and a concealed placket for a sharp, streamlined silhouette with a clean finish. Crafted from premium extra long staple cotton, the fabric is soft, breathable, and naturally smooth. Its finished with DP4. 0 Wrinkle Free Technology and stays crisp all day, without ironing required. Designed with streamlined proportions and minimalist detailing, this shirt offers versatile style for casual office days and off duty plans.