Amecotex&reg; - White Nitelite Extraglow Glow-in-the-dark Polyester Thread 1000M/1100 Yds or 3000M/3300 Yds per Spool (1000M) 1000m/1100yds or 3000m/3300yds per spool for your choice Decorative Applique, Embroidery, and Quilting Children's clothing, pajamas, and pillow cases Charge in natural or artificial light for 30-60 seconds Glow time is up to six hours, night after night