Socks last year weighed about 95 grams per pair, now there are only 65 +/- 2 grams per pair. A direct comparison you will notice the thinner material. The socks are now shrunk the instep and ankle area to 2cm in size. This is no longer true, the size specification, would be 42-45 instead of 43-46.
As the quality has decreased equal to two stages (sufficient to unsatisfactory) might think of counterfeit products. But from [email protected] is not even the receipt of a request and confirmed the trader claiming the socks were genuine.
Conclusion: Stay away!