Wrinkle-resistant clothing—also known as non-iron or non-crease clothing—is made with specially treated fabric to prevent wrinkles from forming during wear, washing, and drying, so garments maintain a smooth appearance without the need for ironing. At Sepiia, this technology is the foundation of our Smart Fashion line and is featured in most of our catalog: shirts, trousers, jackets, and suits that come out of the washing machine ready to wear. These garments can be folded in a suitcase without creasing and can withstand a full day of wear without losing their shape. Below, we explain how the fabric works, the evidence behind it, why it's a particularly good travel companion, and how to care for it.