Only the originals will dosometimes its just not practical or comfortable to wear thermal longjohns so what to do when you need leg warmth without bulk the heat holders answer is their new 053 tog thermal trousers an unlined everyday pair of pants that retains heat via the soft brushed fleeced inner of the fabric officially tog rated to 053ideal for when you need to stay looking well turned out heat holders 053 tog thermal trousers haver a pleasing smooth finish with a soft sheen