Stretchrite 3/4-Inch by 30-Yard White Knit Polyester Elastic Spool Large spool of knit polyester elastic tape Ideal for sewing directly to fabric for elasticized waist bands and cuffs; does not narrow when stretched or weaken with needlework Measures 3/4 inch by 30 yards 56% Polyester, 44% Rubber Machine washable, non-shrink material