Long-sleeved running top made of DRI-FIT material, with reflective stripes for improved visibility at night. - Brand: Nike - Material: DRI-FIT - Size: Please check the images - Color: Black - Design: Long sleeve - Features: Reflective stripes Thank you for viewing. The arms, back, and Nike logo are reflective, making you visible even on dark roads! Some black fluff seems to have adhered to the fabric during storage, likely from the reflective material. My favorite part is that the thumb can go into the cuffs, making it recommended for the coming season! Since it has been worn, there is a feeling of wear, so please refrain from purchasing if you are concerned. Thank you.