Completely. The 3D Build & Play and filaments are specially designed to be completely safe for kids of ages 4 and above. There are no hot parts on the exterior of the Build & Play, and the filaments are non-toxic, BPA-free, and completely biodegradable in your household compost.
Used (extruded) 3D Build & Play filament cannot be reinserted into the pen. However, the non-toxic 3D Build & Play filament is completely biodegradable in your household compost.