The mask is made with zbursh, no UV and no Tex.
the model consists of multiple Solid closed elements, welded together by Boolean operations,and the polygon amount has been moderately reduced by Decimation master. output obj, stl, blender various general formats, and the output size is the size of a1：6 figure.34.6*75.88*57.31mm

The package file does not contain human heads.You can get more information from the preview pic.If any question please write to me.

A small-scale version with a height of 8cm is added. The thickness of the helmet reaches 3mm by increasing the inner village, which is convenient for small-scale printing. It includes ztl, blender, stl and obj version files, see screenshots for details