Batting tape is smooth which means no mid-quilt lumpy areas, and less pinning and sewing. Sheer, lightweight interfacing that won't show through fabrics. Won't shift, bunch up, stretch, or separate. Easy to machine or hand quilt. Will not gum up needles when sewn. Iron-on, permanent adhesive on one side. Machine washable, dryable and dry cleanable after fusing. Fiber content: 100% Polyester. This package contains 15 yards of 1.5 inch seam tape. Made in the USA.