Three-hole punch compatible headband with slim cord design with integrated cinch for parachute cord strap. (Qty 2) Soft spring browband design provides elasticity to replace elasticity lost in cord. Slim design reduces print time and material by less than half (~1.5hr, ~5m filament) compared to original Prusa band from which it was derived.  Cinch threading instructions and all design docs can be found at https://brimcg.github.io/visor   Additional concept of low cost brow shield for top protection attaching to same headband shared on site.