What to wear under a quarter zip

A quarter-zip is a versatile mid-layer that looks best when paired with smooth, breathable fabrics underneath. AZKnit recommends wearing a fine-gauge knit T-shirt, cotton jersey, or moisture-wicking base layer that lays flat under the zipper seam. These materials regulate temperature and prevent bulk while maintaining a clean silhouette. For office or casual wear, a collared shirt or polo adds structure without wrinkling beneath the zip.

In colder weather, layering a lightweight merino or modal knit shirt underneath provides warmth without restricting movement. The natural elasticity of knitwear ensures comfort and breathability during all-day wear. Avoid thick or textured tops that bunch at the neckline—smooth, flat knits preserve the refined lines of the quarter-zip design while enhancing thermal comfort.