I purchased three pairs of these socks for walking/running, and they are the worst socks I've ever had. They were okay when I first put them on - nothing impressive, and were even less impressive in use. They did not hug my feet at all, especially in the arch. I do have high arches and it seems these socks, unlike even the bulk packs at Costco, could not conform.
To make matters worse, after washing, they lost most of what there was of their fit and shape. (I washed in warm water and used low dryer temperature.) I called Balega TWICE. Each time there was nobody to take the call and my only option was to leave a message. Balega never returned the call. Never.
So, poor quality product and even poorer customer support. Balega obviously does not stand behind their products.