I bought 2 packs of size 7-8 in October 2012 for my son who wears size 10. Although the quality was superb (thick and soft), they were a tad big for him at that time. After 4 months of wash & wear, they stretch a little & bunch up whenever he wears his boots, so I decided to order 2 more packs. This time I ordered size 6-7. I kept the package from my previous purchase (7-8) and a pair of the socks unused for comparison. Guess what? Size 6-7 is exactly the same size as size 7-8. I also noticed that the socks from my 1st purchase were a lot thicker. So I checked the package & it turns out that the socks from my 1st purchase (7-8) were made in Korea whereas the socks from my 2nd purchase (way thinner) were made in China. I wish they kept being made in Korea :(