Royal Blue Picnic Check Poly Poplin is a versatile lightweight fabric. Poplin is great for making clothing, liners in baskets and handbags, window treatments, or in sewing and embroidery projects, like as a backing on a quilt. It can also be used to make bias tape, flag making, and in crafts. You name it, poly poplin is perfect for any project that needs a durable plain weave fabric.