Thank you for viewing. Kiribai Kiri-bai Strange Socks That Don't Let Your Feet Get Cold Extra Thick Free Size 23-27 cm The following is a quote from the internet: Warm specifications with high-density pile and double layers. The over-the-knee extra-thick type uses high-density pile from the toes to the ankles, and double ribbed knitting with elasticity from the ankles to below the knees. It has a voluminous feel and can firmly wrap and keep warm cold feet. These socks are perfect for those who suffer from cold feet and want to prevent it. If it doesn't fit in the mailbox, I will open it and fold it again. Please refrain from purchasing if you are concerned. Please read the profile and consider purchasing after you are satisfied.