XYZprinting da Vinci 3D Pen - Environmental Friendly (Includes: Non-Toxic PLA Filament, Cleaning & Maintenance Tools) The plan refill filaments are non-toxic plan filament made from organic materials This filament has gone through various tests to ensure that it is deep-free and heavy metal-free for your safety The da Vinci 3D pen is lightweight and mobile, allowing users to make use of their surroundings to create large or small objects Move freely along a surface or extend your creation upwards to add dimension to your drawings