Smini Fly Black 3mm HeadbandOptimize every gram on your Smini headlamp with the minimalistic Smini 3 mm headband. Of the two available Smini headbands, this is the lightest, weighing only 9. 1 grams. The compact design makes the Smini 3 mm headband an ideal backup light for races, lightweight trekking, or daily runs. Long Optimize every gram on your Smini headlamp with the minimalistic Smini 3 mm headband. Of the two available Smini headbands, this is the lightest, weighing only