Glow in the dark fluorescent knitting yarn

·Material: 100% polyester·Packaging: about 1kg/bobbin. Description:High light glow in the dark knitting yarn is a unique kind ofknitting yarn that produces light in the dark once it has been exposed to any light source, UV light, sun light, or natural light. This high light glow in the dark embroidery thread will absorb light during exposure time and then gradually release that energy to create a glowing effect at night or in low-light situations. Features:1. Polyester material, chemical-resistant, eco-friendly, high tenacity, low shrinkage2. Goes on the machine very smoothly and doesn't break the stitches3. Colors can be customized