The buckle is the part that fails first: This one threads through a solid metal buckle and folds back on itself, so the closure keeps its shape through daily on-and-off.
Set the fit anywhere: Hook-and-loop closure means the band fastens at any point along its length, not at fixed notches, so the fit lands where it actually feels right rather than one hole too tight.
Woven, with give: The stretch weave moves with the wrist through a workout and lets air through, so the band does not hold sweat against the skin the way a solid strap can.
Five, so one is always clean: With five bands in the pack, one can stay on while another airs out, and the color can change with the day.