Some people think if the color of down is related to the quality. It is not true. In a fact, there are 3 indicators affecting the warmth-Filling weight, down rate and filling power. We use ...g/m2 in duvet or ...g in pillow to show the filling weight. We use percentage to show the down content like down rate 80% means the the down content accouting for 80%. Filling power refers to the cubic inches of volume per ounce (30 grams) of down under certain conditions. If an ounce of down space is occupied by 600 cubic inches, then we say the filling power 600. The higher the filling power, the warmer you feel
