Description: This luminous yarn set contains 4 rolls of luminous yarn, which is very complete enough to be used for crocheting art crafts. When you put it under the sunlight for half an hour, it can keep glowing for about an hour. With different colors and luminous effect that is beautiful and attractive. Key Feature: Lightweight Luminous Yarn: This lightweight luminous yarn weighs only 50g per roll, which makes it perfect for carrying around when you are travelling or having a picnic. You can ease the boredom of travelling by knitting crafts. Different Colors: This 4-piece glow crochet yarn set comes in two different styles for you to choose from. One is white and dark green luminous yarn and the other is white and fluorescent yellow luminous yarn. They have different glowing effects in the dark. You can choose any of them according to your preference. Specification: Product Name: Glow in The Dark Yarn Material: Polyester Color (Optional): White and Dark Green, White and Fluorescent Yellow Weight: 50g / Roll Recommended for hand-knitting Usage: Hand-knitted bags, tapestries, carpets, etc. Size: Thickness: 3mm / 0.1 inch Length: 25m / Roll Note: 1.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2.Please allow slight dimension difference due to manual measurement. 【Parts List】 4 × Glow in The Dark Yarns (White and Dark Green) Or 4 × Glow in The Dark Yarns (White and Fluorescent Yellow) [Product Details] The length of this glow in the dark yarn is about 25m / 27 yards, and the diameter of each roll of yarn is 2.5-3mm / 0.09-0.1 inch. The weight of each roll of yarn is about 50g, which is lightweight and suitable for making all kinds of knitting crafts, such as scarves, shawls, jumpers, hats, socks, gloves. You can also DIY different items according to your own preferences and needs. [Easy to Use] You just need to put the luminous yarn under the sunlight to fully absorb the light, and it will become brighter at night, so that you can find your crafts at a glance at night or in a dark environment. You will also be an instant center of attention when you wear clothes made from glow-in-the-dark yarn. [High Quality Polyester Material] This glow crochet yarn is made of high quality polyester material, soft and comfortable, not easy to tear or break, suitable for DIY beginners and skilled people. It can inspire your creativity and develop craft skills. It will also leave precious memories when you DIY crafts with friends and family. [How to Glow] You just need to put it under the sun for half an hour to maintain the glowing effect for about an hour. [Thoughtful Gift] You can give glow in the dark yarn as a gift to those beginners who love knitting, family members, friends, neighbors, classmates or teachers, they will be happy to receive such a creative gift.