In a stylish choice of colours and patterns, these Mens 1 Pair SOCKSHOP Heat Holders 1.6 TOG Lite Striped, Patterned & Argyle Socks are made from advanced, Japanese design thermal yarn, looped and brushed inside to maximise the superior insulation and moisture breathing performance. The brushing process also make these socks extremely soft inside for added wearing pleasure and comfort.are no ordinary Heat Holders (although, regular Heat Holders are pretty extraordinary TBH!). The thinnest, lightest sock ever produced by the brand, perfect for tighter-fitting shoes, these socks have a TOG (Thermal Overall Grade) rating of 1.6 — over four times warmer than wearing a basic cotton sock.