Neon Metallic ribbons that glow in the light. Sparkle Rays is 2mm wide and Petite Sparkle Rays is 1.5mm wide. Best when laying tool is used. Petite includes 3 Glow In Dark colors. For use on Needlepoint 13-14 Count, Long Stitch 13-18 Count, Cross Stitch 7-8 Count. 97% Polyester, 3% Nylon. 10 Yard Cards. Hand Washable, Test First. Made in Japan.