My feet loved these socks from the first touch of the material. I did not know how 3.0 could be improved on but CEP did it.
I really like the 3.0... It is a beast! With that being said I love the 4.0. It has a lighter feel with cushion yet manages to stay put. And the colors...love the colors.
I wear CEP no show socks almost every day. The new 4.0 socks are SO nice! the new colors are awesome and I didn't think they could make the socks more comfortable but somehow they did. They're a little lighter and allow more air through the bottom of the foot so they're super breathable. Best Socks Ever!