i bought these for my husband and he says they are anatomically impossible to wear, the toes are made for people with super long toes and the heels are set to the side instead of where they should be. you have to twist the heel and sock around in order to wear them and then they slowly slide back. it's possible that the 6 pack i got was just defective, but that seems unlikely. as they came from Japan (although they are made in china) i do not think returning them is an option. shipping was fast, but when the product is defective, i wish they had never come