3 Sizes -- Coming with 3 rolls of elastic straps total length is 43.7 yards/40m. The roll is 20m/21.87 yards long 6mm/0.24 inch wide another two rolls are 10m/10.9 yards 8mm/0.32 inch and 10mm/0.39 inch wide High Stretch Material -- Made of premium thermoplastic polyurethane material soft and comfortable to your skin with good elastucity can serve for a long time Transparent and Comfortable -- Elastic straps is simple clear color which can match with many clothes. The thin soft strap cord is comfortable to touch which can be applied as bra straps shoulder straps Convenient to Use -- They are packed in roll you can cut into any length and wrap the rest cord around the spool convenient to use and easy to store Wide Application -- Perfect for cloth sewing project like clothing underwear swimwear sportswear bedspreads hats etc