They really are the best
I am a woman that wears a size 8-9 shoe. It is so difficult to find secret socks that fit comfortably without putting pressure on the toes or slipping off the back of the heel. I buy them from the men's section of a well known "upmarket" store as they are supposed to be size 7-12. After one cold wash (no tumble drying) they are a size 7-8 and give me ingrown toenails! So I was sceptical and initially only bought one pair of Boody's invisible socks , size 6-11 (they're not cheap and I didn't have much hope of them being any better than all the other brands I've tried). I was thrilled to find that they were comfortable and stretched well with no pressure on my toes or toe nails. But I needed to make sure that they don't shrink before celebrating. I'm happy to say that after a wash, they were still big and stretchy enough to fit and did not creep or fall off the back of my heel. So if you've got big feet and are wondering if these are going to fit well, from a lady's 8-9 shoe wearer, you can rest assured they will. I've since bought another 5 pairs !