The thin knit turtleneck emerges as a key layering piece for Spring Summer 2026, shifting from a basic essential to a visible structural element. Worn close to the neck and deliberately exposed, it sharpens the silhouette and brings clarity to tailored looks. Designers consistently use it to anchor blazers, leather, and fluid pieces, creating a clean, uninterrupted neckline. This evolution makes it a highly transferable trend for corporate dressing, combining precision with subtle impact.