This is their new opaque version of the xt which is pet. Very similar to the madesolid pet+. I had a chance to print a sample of this xt in the black shown. Totally awesome filament. Ver strong. Has the feel, flex and durability similar to polycarbonate. Layer bonding is unbelievable. Your part basically has no layer when done. Its a solid piece of plastic. It also has very low warp and shrinkage like pla does. Imo this is basically the filament of the future and exactly what the 3d printing community needs since we dont have heated chambers. We can now print large, functional items and not have to worry so much about warping.