Only the originals will doprone to cold feet ideal for everyday casual use these ladies fit heat holders 16 toglite twisted yarnsocks combine the ultimate thermal power of the original design with a medium thickness for a more lightweight fit and feel suitable for wearing with casual shoes and boots that the standard thickness heat holders might feel too bulky forin all other respects though heat holders16 toglitetwisted yarnsockshave the same insulating thermal yarn and intensely