ltem	Thickness (mm)	SQM2 (g/㎡)	Moisture regain (%)	Air-permeability (L/ms)	Clo (clo)	Warmth  retention ratio (%)	Heat transfer coefficient (w/m℃)
Feather down	8.7	200.0	2.5	2304	7.583	90.20	1.102
Wool	5.65	153.9	12.92	2554	6.752	92.5	0.6
Camel wool	2.97	150.6	13.01	2698	7.168	89.2	0.9
Camel Hair	3.19	109.0	9.21	2656	6.451	88.7	1.0
Cotton	4.18	133.2	7.36	1578	1.433	66.5	4.5

Obviously，with reference to tabular data, the best thermal material is feather down, second camel wool,third will come to wool, camel hair and cotton.

Feather down is generally refer to duck feather down and goose feather down. lt grows on the abdomen of duck and goose. Parts look like reed flower, we call it down, parts are in flake, we call it feather.

Feather down is the best environmental natural material in the world.
Received the pre-washed raw feather down from slaughter house, feather down factories will start to the completely procession to get the best feather down.The flowchart is:
raw material → crude separation → dusting → washing → airing → drying → coolingfine → sparation → packing.

After fully washed and separated, we get the pure and clean down feather, with big down cluster and better fill power, the feather down can keep us more warmer.

ADVANTAGE AND CHARACTER OF FEATHER DOWN

UNDERSTANDING FEATHER DOWN

COMMON RELATED QUESTIONS

All of Our down & feather raw materials comes from large slaughterhouses.And the down and feathers are further separated only after being washed, high-temperature disinfected and dried.Usually, down is used for duvets, sleeping bags, clothing and other products that pursue high thermal performance. Feathers are used in pillows, sofa cushions, mattresses and other products.

The down quality is chiefly determined by its indicators like down content,fill power, cleanliness etc. It is not exactly correlative to the variety of down.

 

 

 

 

Yes. Our down and feathers are all sterilized through high temperature treatment,also the fabrics are certified by OEKO-TEX.

The down fluffiness is displayed by fill power. The higher the fill power is, the superior the down quality will be . The fluffiness of down is associated with the down content, cleanliness, and dry humidity.