What is the suitable temperature of white duck down 129g?

White duck down 129g In fact, if you only wear T-shirts and down jackets, it is only suitable for the weather and outdoor temperature within MINUS 10 degrees, and you can't work or stand outdoors for a long time. You should wear white duck down or goose down with a filling amount of about 200g, which can be suitable for outdoor temperature or work at MINUS 20 degrees. Of course, if the temperature is low, you can choose a down jacket with a high filling amount and a suitable heat preservation type.