DMC Light Effects adds metallic glimmer and pearlescent shine to embroidery, and some shades offer glow-in-the-dark effects for cross-stitch and needlepoint. Shade E415 is reference 317W, sold in an 8 m (8.7 yd) skein of 100% polyester made with colourfast, fade-resistant dyes so finished work can be washed at 30°C/86°F. Tarnish-resistant fibers help the sparkle stay bright over time on finished pieces.