This is a strap designed for use with surgical masks to relieve pressure on the ears. It was designed with the intention of providing greater security (clips fasten the mask bands in place) and minimal possibility of entaglement in the wearer's hair. Can be printed flat with no supports and minimal stringing (Tested with PLA). 

Similar filament consumption (1.489m 1.75mm PLA each) as 3DPX-013410 (https://www.thingiverse.com/thing:4249113), to which I attribute the basic inspiration for this design.

Any suggestions are welcome :)