Poplin Tie Up Top Poplin Fabric Everything You Need To Know Bryden Apparel Cotton Poplin Plain Reynard Fabrics Signature Crisp Cotton Poplin Core Fabrics. When life gives you a Poplin Tie Up Top, you wear it. Made from 100% cotton poplin, our Poplin Tie Up Top features a classic fit through the shoulders and a boxy, relaxed body. Three tie closures add a charming, girly chic touch making it perfect for all things summer. We recommend layering with a cami for a super cute look if you'd like something more covered. Please review the wash notes below to ensure your new Cotton Poplin piece is properly cared for and loved.