1. Contains the amount of velvet. The amount of velvet is the ratio of the velvet inside the duvet. Outdoor duvet in the amount of velvet is generally more than 80%, this data indicates that the content of velvet is 80%, feathers and other miscellaneous accounted for 20%. The same volume of duvet, the higher the amount of velvet, the lighter the weight, the better the warmth. Lightweight duvet for the amount of velvet is more demanding, the general content of velvet in more than 90%. The amount of velvet refers to the weight of all the duvets filled with a duvet. General outdoor duvet of the amount of velvet in about 250-450 grams. When the temperature is 0 degrees Celsius to 10 degrees Celsius, generally you can choose to fill the amount of 76 grams/square meters of autumn thin; when the temperature at-10 degrees Celsius to 0 degrees Celsius, generally choose to fill the amount of 92 grams/square meters of winter thin. When the temperature is low, the amount of velvet needs to be higher.
2. Fluffy degree. The fluffy degree is an important index to consider the degree of duvet warmth. The higher the fluffy degree of the duvet, the more the lower the amount of the duvet can be fixed to a larger volume of air insulation and insulation, the better the warmth of the duvet. In the purchase, you can put a few duvets together, using the same strength to hold down the surface of the garment, the faster the rebound time, the better the quality of the duvet, indicating a high degree of fluffy, can not bounce up or rebound is very slow, indicating that the quality of the filler is poor, there is no resilience at all Rather than duvets.
3. Duck and Velvet. At present, the down materials on the market are mainly duck and velvet. Among them, velvet has white goose velvet and gray velvet; duck has white duck and grey duck. Generally speaking, large, mature poultry, the quality of fluff is better, but also more warm. Therefore, velvet is more warm than duck, but the difference is not very obvious. From the warmth of the consideration, the best is white goose velvet, gray velvet, followed by white duck and gray duck. Velvet production is small, so the price is higher. Duck is relatively easy to slab due to its short fiber.