This is matte blue PLA. The matte texture gives it a great feel. One of my favorites. The matte finish does scratch easier than the smooth finish sliders, but in my opinion it’s worth it because the feel and grip is so much better. I’ve recently discovered that if you carefully, and for a very short period of time run a heat gun over any scratches they become minimized. Don’t stick it in your pocket or bag with other items that my scratch it, keys for example. Keep it separate.