Not quite sure, but it does change their shape. I’ve been stacking my socks in my dresser drawers for long time because I don’t like wrapping them over each other.

yes I think it does. I have allways just folded mine in half its faster and you don’t have to worry about streching them out….

It sure stretches mine out! But then I use that as excuse to buy new socks!!! : )

Yeah, it stretches them out. 90% of the time the ball that’s created is significantly larger than your ankle, thus stressing the elastic beyond it’s normal length. Causing loose floppy socks.

A tip: spend the money and get some nice socks. They’ll last much longer and you’ll not only save money, you’ll be more comfortable and stylish.