Gutermann Elastic Thread 10m spool, colour number 6037 Highly elasticated sewing thread Use only as a bobbin thread on a sewing machine Thickness Ticket No. 18 10m spool Ideal for ruffles, shirring and smocking. Suitable for all fabrics. Light Blue Gutermann Elastic thread is a polyester/polyurethane highly elasticated sewing thread provided on a 10m spool. This highly elasticated thread is idea for use in creating ruffles, shirring, crimping, gathering or smocking as well as for cord for knitting and crocheting. Suitable for use with all fabrics, woven fabrics and many other materials, when used in a sewing machine use only as a bobbin thread. Suitable for washing at 60°C, tumble drying, dry cleaning and low heat ironing.