We use bare Spandex / Lycra / Rubber as its core thread with various yarns of Nylon / Polyester etc. for covering / Air Intermingling to produce stretch yarn. This covered yarn product has higher elasticity, fatigue resistance, wear ability and adaptibility for high temperature dyeing than ordinary yarn. Therefore it is well recevied to develope high grade fabrics and popular clothing ornament. Covered Spandex / Rubber makes the product feel soft, better flexibility, comfort for wearing and light wieght.