Mask Strap

Fully designed from scratch, this strap comes to fight the easily escaping mask straps.
It has some longer hooks with enclosed rings.

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Updated with another version.
This one has a wider shoulder for the rubber band, so it should be stronger and last for longer period.
Also removed unneeded material from the neck part.

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Another update - V4.
Made the Update V3 a little narrower, in case someone feels it is too wide.

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Another update - V5.
Made another model to speed up the print process. There is no infill of the inner perimeters. Just an external wall of 4 mm.
The speed a single strap can be managed by playing with wall width and amount of perimeters. I am using 8 perimeters at Super-Slic3r's default flow parameters. This prevents the solid infill between th