Luna Glow-in-the-Dark ThreadFrom Madeira USA
Luna glow-in-the-dark, 40-weight embroidery thread from Madeira USA is activated by exposure to bright light. Soft and smooth, it is ideal for embroidered items to be used outdoors, on childrenswear and on Halloween costumes, according to the company. It stores light and then emits a luminous green color in the dark. It is available on 820-yard spools.