Spectrum ASA 275 filament has excellent resistance to UV radiation, heat and other weather conditions. In addition, this filament has an improved flow, reduced shrinkage and better adhesion between layers. ASA 275 can be printed almost as easily as Premium PLA, allowing large 3D prints to be printed at high speeds and not shrink after cooling. This is a 1.75mm polar white filament on a 1kg spool.