ZLNU is a Polish womenswear brand founded by fashion designer Joanna Przesławska-Prętka, focused on clothing made from natural Polish linen. The collection is built around relaxed, feminine silhouettes, with oversized shirts at its core alongside linen trousers, shorts and small accessories.

Every ZLNU piece is made in Poland, with sewing carried out in a partner tailoring workshop near Poznań. The brand uses linen from a long-standing Polish supplier and also offers selected products on preorder when a size is temporarily unavailable. Its accessories include linen scrunchies, decorative pins and a reusable linen bread bag.