Very light weight bands to go over ears and most of head. Alles perfekt! Its not right! I bought it for my e bike I have which are heavier bikes. I have an iPhone 12, and the unit was just clunky and wobbly on my phone . If your ears are even smaller than mine, you could probably replace the rubber bits on the end with smaller ones from a different company. Excelentes, cómodas, a la medida, mi mamá tiene piel sensible por sus padecimientos y las usa todo el día en casa. 4 reflectors were tapped on. If youre buying these to use at a local gym where they have their own clamps (or clips, same difference) Id recommend getting a funner or brighter color so no one thinks youre taking the gyms set! Too thick and needs more adhesive strips, so will probably add some of the double-sided "gel" tape i have sitting around to keep things more secure.