An "3D filament ASTA Blue" is not a single, definitive product, but rather a blue 3D printing filament, likely ASA (Acrylic Styrene Acrylonitrile) or PLA (Polylactic Acid), offered by the brand ASTA. If it's ASA, the "Blue ASTA" filament is known for high UV and weather resistance, making it suitable for outdoor use, with mechanical properties similar to ABS but easier to print and less prone to warping.