Only the originals will dofor those who love the traditional weight and feel of lsquoproperrsquo wool boot socks the folk at heat holders have combined the heat retaining and wicking properties of natural wool with modern fibres and innovative knitting technology to create a high performance sock worthy of the heat holders namethese sockshop heat holders wool rich thermal socks have a tog rating of 27 making them over 8 times warmer than basic cotton socks the longer looped pile and so