【Material】: Acrylic fiber, reflective silk 【The package includes】: 100G Reflective Yarn (2 rolls) 【Aftercare】:We are so confident in the quality of our products that if you have any product issues we are here to support you too If you have any questions or concerns please contact us and we will be happy to help. Due to manual measurement, there may be some deviation. Reflective yarn: 50g per roll, about 55 yards (size: about 6.2 inches * 3.2 inches wide) Soft and comfortable: The yarn is very stretchy, 100% acrylic + reflective yarn, provides excellent breathability, keeps you comfortable, cotton is soft, very friendly to your skin, feels very gentle, and he has 17 colors to choose from , you can make more distinctive handicrafts according to your preferences, the best choice for keeping warm in winter. LOOKS VERY COOL: Hides his reflective features during the day and looks like a blended weave, and at night he provides maximum visibility, perfect for night runners, walkers, students, commuters or anyone out and about after dark people. MULTI-SCENE PRACTICAL: The shiny effect of reflective embroidery thread will bring a fun appearance to Halloween costumes, stage costumes, pajamas, fashion clothes, Christmas decorations, pillowcases, decorative seams and anywhere you want reflective.