[Glow in The Dark Yarn]: Although it looks like ordinary yarn during the day, the fluorescent design makes the yarn glow at night, bringing you a fresh visual nighttime experience. (Absorb sunlight during the day, and shine better at night.) [Premium Material]: 100% Polyester yarn and eco-friendly dyes. The yarn with super soft polyester material. With fine workmanship, it won't fade, shrink or pill after washing them. [DIY Glow Yarn]: You can use it to decorate anything you can think of, make luminous hats, scarves and hoods for nighttime adventures, or add fun embellishments to clothing to make your items look cool. [Multicolor Yarn]: We have 4 colors for you to choose from to meet your every need.The total length of each roll of yarn is 50m and the diameter of yarn is 2-2.5mm (Approx). [Yarn for Crocheting, Kniting]: Make beautiful knitted or crocheted clothes, blankets, sweater, garments, towel, scarves, hats and more with the gorgeous look and texture of tweed yarn.