To compare two down comforters, simply multiply the cuin by the quantity of down (not the weight of the down jacket).
In both cases, the down jackets are equally warm, but the second will be lighter and more compressible. The term "warmth index" is used when testing down jackets and sleeping bags. Obviously, the better the feather, the more expensive the down jacket.
Down jackets fall into 3 categories:
The competition is fierce among synthetic insulation manufacturers. All of them have their own technologies and innovations, and claim unrivalled properties. There are, however, some highly reputed manufacturers of synthetic insulation, such as Primaloft or Polartec (made from recycled plastic bottles).
COMPARISON TABLE BETWEEN DOWN AND SYNTHETIC DOWN JACKETS
Advantages |
Disadvantages |
|
Down |
High warmth-to-weight ratio Very compressible Very lightweight Comfortable, cozy Longer life than synthetic More breathable than synthetic High price (depending on down quality) |
Loses its insulating capacity when wet, and dries with difficulty More expensive than synthetic Feather leaks when outer fabric is torn Is harvested from animals - prefer labelled down |
Synthetic |
More economical Retains some of its insulating qualities even when wet Dries more quickly If torn, the filling remains Easier to care for and wash than down jackets. |
Lower warmth-to-weight ratio Not as compressible Not as durable Less breathable than down (except for certain types of synthetic) |
Choice of outer fabric:
You've finally invested in the down jacket of your dreams, and you want to look after it as well as possible so that it lasts as long as possible. Taking care of a down jacket isn't easy. Don't hesitate to wash your down jacket once a year. This will reactivate the loft and waterproofing properties of your down jacket. Alpinstore gives you a few tips.