Even with a heavy pack
I am on my second pair of Hard Rocks. I use them hard for an old guy. What I really like is the roomy toe box. I even wear them while backpacking with a heavy pack. My feet are comfortable and cool at the end of a long hike. The other old goats are groaning as they take off their leather boots and put on their tennis shoes. I'm already there with my Hard Rocks. I know it's hard to teach an old dog ....