Feels weird, then wonderful!
I put these on and at first the thickness of the built-in arch pad felt strange. But after a few minutes of walking, it conforms to your foot and it has improved foot pain, balance, and (to my surprise) my arthritic knee and hip pain. There's something about the stretchiness of the sock that holds the arch support in place better than the ones that just fit in your shoe. My first pair has been through the washer (low temp) and dryer (also gentle), and they wash beautifully. I'm ordering more today.