It just means that it uses loftier down insulation that will be able to provide better thermal efficiency and warmth at a lighter weight. Most down jackets — including all of the winter jackets ...

Because of its slimmer fit than most of the best men's winter coats, it's best paired with lighter and thinner under layers like thermal tops or flannels as opposed to chunky sweaters or hoodies.

And the extent of the thermal protection it offers means you don’t need to layer up underneath the Expedition Mid Winter Jacket – a decent base layer is all you really require.

It's all thanks to the brand's NASA-inspired Omni-Heat tech that uses thermal-reflecting fabric ... been saving your money to buy a thick winter puffer jacket from one of the high-end brands ...

The vents at the chest allow a good amount of air into the jacket, however they are a bit awkward in the way that they are ...