It is as advertised.  Pulled on like a sock and fits as high as the size of your calf will allow, as it fits like an ace bandage with limited stretch ability.  I can pull it up to my knee but it is not as comfortable there as at the top of my boots.  I tested with cards and cash and have no problems with those.  Tested with a Passport and there is no way I'll carry that in this wallet.

I'll keep it and may use it some but It won't hold much and will be my alternate or spare concealed wallet.