I am looking for some warm socks for my mother. She is confined to a wheelchair and is in a nursing home and finds that hr legs get cold and would like me to find her some knee high socks. She has large calves to begins with and due to her cancer and diabetes her legs and feet often swell. Any suggestions as to where I can look online to source something out for her? We are in Canada so preferable to have a company that would ship here. Thank in advance for your suggestions.