What Is a Light Down Jacket

This number describes the ‘fluffiness’ of the down; fluffier down means more air gets trapped, keeping you warmer while still feeling light. A fill-power over 600 will offer good warmth without making you feel bulky, but the higher the number, the better.

Are light down jackets warm?

A down jacket is a jacket which has been insulated with the soft and warm under feathers from duck or geese. Down is a fantastic insulator as the loft (or fluffiness) of down creates thousands of tiny air pockets which trap warm air and retain heat, thus helping to keep the wearer very warm in cold winter weather.

What's the difference between a puffer jacket and a down jacket?

What is a puffer jacket? Some puffer jackets use down, but many more use a synthetic insulation that can be lighter than down and still provide the same warmth. … Style wise, a puffer jackets get their name from the pattern of stitched sections filled with insulation to give it that “puffy” look.