Fusible, tricot knit interfacing/underlining with crosswise stretch for soft shaping and tailoring. Fusi-Knit, #1300, is a lightweight, fusible, tricot polyester interfacing that provides support, shape, and body for light- to medium-weight knits and wovens. It’s also appropriate for loose weave wovens. Made of 100% polyester, this product has lengthwise stability and crosswise stretch. Its unique weave is smooth on one side and textured on the other. It offers soft support without any bulkiness or stiffness, yet prevents fabric from excess stretching. It easily fuses with a secure bond using an iron set to wool and a press cloth. machine washable in warm water on the delicate cycle, tumbled dry on low. Use a cool iron after application.