For their size, the AKG K701 are light. The foam ear pads, covered with velour, won’t cause any friction, but they may make you sweat a bit if you are in a hot room. The K701 have a padded leather headband that is supported by an outer thin plastic structure to hold it in place.
The metal band is very flexible, does not cause uncomfortable clamping, and should be large enough to fit over any sized ears. Their bulk might make them slip a bit with physical activity, so they are better suited for home or studio use.