Whether you work in constantly cold conditions or spend a lot of time outdoors, when temperatures fall, pull on these men’s Heat Holders Thermal Long Johns and you’ll have warm, comfortable legs. With a 0.45 tog rating, these Heat Holders ensure that cold is kept out, while warm air is kept close to your skin. The long johns are a thermally efficient cotton blend and have a ribbed construction, which allows them to shape to your body. They are lightweight, with a elasticated waist and a fly front for convenience.