Features: Glow in the dark polyester yarns are more bright at night, enabling your sewing and knitting crafts more eye-catching. Our luminous yarn for crocheting is made of quality polyester, not easy to tear or break and is soft, comfortable and breathable. You can use them for different parties use or craft decoration use. Glow in the dark yarn measuring about 49 yards per roll, and the thickness is about 2mm0.07inch, is compact and portable. Each pack comes with two spools of glowing yarn that are long enough to ensure you can DIY and complete your kniiting & crocheting art. Great for various knitting crafts, like scarves, shawls, sweaters, hat, socks, gloves, carpet, toy, or make clothing funny and embellishing and make your unique craft. You can mix different colors to weave colorful small items, suitable as gift for your friend, family, colleague, classmates, expressing your love and care for Christmas, Valentine's Day, birthdays, Easter, parties and more. Specifications: Material: Polyester Color: Blue; Purpler Quantity: 2 Rolls Size: Approx. 45mx2mm/49.21yard x 0.07in Weight: Approx. 110g Package Includes: 2 Rolls Luminous Knitting Yarn note: 1.Please allow 0-1cm error due to manual measurement. make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you