Why not just email Sock Guy? They have a form on the website.

I wash all my commercially-made wool cycling socks (as well as all my Smart Wool hiking and casual socks) in cold water and tumble dry. I've noticed that some Smart Wool styles dry better than others. In other words, some shrink a bit and some don't. It has seem to become more prevalent with more recently produced items.

My few Sock Guy wool socks seem to be consistent in bahavior with Smart Wool socks. You don't quite know until you try . . . and I have line-dried socks. Too stiff.