Honest review of "Sock Supplements As If They Were Kotatsu Socks"! The unique knitting method warms the ankles and makes them puffy.
I actually tried the "Sock Supplement As If You Were in a Kotatsu" socks, which are talked about as being as warm as being in a Kotatsu. These socks use a unique knitting method to warm up the Sanninjiao acupuncture point on the ankle.