Champion has changed these sox. A couple years ago, they were marketed as "Performance" and they had good cushioning and fit, and an ankle collar nearly 2 inches high. Now they're "High Performance" and they're thinner, shorter, and the ankle collar is around a half inch. Don't expect these "High Performance" sox will replace the earlier, better product. Search for versions of the model CH1963, see the difference. Or just buy and wear these for what they are.