Down has always been the gold standard for keeping warm in winter because of its unparalleled thermal insulation capacity. Down comes from the soft feathers under the outer feathers of birds. Down is used in a jacket in roughly the same way-it fills the inside of a quilted or down jacket and provides an inner layer that prevents heat loss. However, downward is not the only option. Synthetic down fillers have become lighter and warmer, bringing them closer to natural competition.

Synthetic down jackets have some benefits. They are usually cheaper, allowing you to get winter warmth without having to sell all other clothes. In addition, although down is physically comfortable, it may make some people feel morally uncomfortable. Down is picked from birds in many ways, but not always in a cruel way.

Synthetic fillers are not made from animal products, but this does not mean that they get full marks in terms of sustainability-they are made of polyester, which is a petroleum product. Fortunately, the use of recycled polyester and nylon in a large number of jackets can at least reduce the impact on the environment. The jackets from Patagonia, The North Face and Everlane on our list are all filled with recycled polyester. There are also many different styles of synthetic down to choose from, so you can find a jacket that suits your style.

No matter what the reason you are looking for synthetic down jackets, we have collected some of the best choices, including outdoor firm Patagonia and North Face, and more fashion-focused brands.

Puffer fish in Patagonia are everywhere, and it is not difficult to see why. They are warm, comfortable, available in a variety of colors, and are made with sustainability and performance in mind. This jacket has a hood and a DWR finish to keep you dry. The padding is made of 55% recycled polyester, and the outer layer of the jacket is made of recycled polyester. It is expensive, but Patagonia is known for its maintenance schedule, so this is a jacket you will have for a long time.

Buy: Patagonia synthetic down jacket $249.00

The military jacket with inner lining serves as the middle layer under the field jacket, which plays a role of heat preservation, hence the name. Alpha Industries has performed a classic interpretation of this style, which is not surprising considering that the brand has been making clothing for the US military for decades. If you want to match the look of Travis Bickle, Alpha also sells matching field jackets. The exterior is nylon and the filling is polyester.

Buy: Alpha Industries synthetic down jacket $90.00

Rains makes some of the most stylish and simple wet weather gear. They are known for their lightweight sweaters, but they also make stronger cold weather jackets, such as this insulated parka. It has adjustable cuffs and drawstring hem to provide better insulation in cold weather. And, of course, it will keep you dry.

Buy: Alpha Industries synthetic down jacket $325.00

Apart from the exquisite king of traditional styles, Ralph Lauren, who else can perform the most exquisite interpretation of the classic lined jacket styles? This jacket combines elements of a lined jacket, bomber jacket and housework coat. The brand replaced the lined cardigan cut with a ribbed collar around the neck, and added patch pockets on the chest, like a housework coat.

Purchase: Alpha Industries synthetic down jacket $205.00 (original price $325.00) 37% discount

Layering is all the fun and games until you have to take off the layer and take it with you. The ThermoBall jacket by The North Face makes everything simple because it is a compressible jacket that can be pulled into an internal pouch. The quilted design and funnel collar help keep you warm without making you feel heavy. The insulation material is made of recycled polyester, while the outer fabric is recycled nylon.

Purchase: The North Face synthetic down jacket $199.00

The Everlane lining is more like a shirt jacket; it has a pointed collar, a button placket and a breast pocket. There are also two hand pockets on the hips. It uses a classic quilted design and polyester padding. The padding is made of recycled polyester, while the outer shell of the jacket is cotton. This jacket comes in black, green and blue.

Purchase: Everlane synthetic down jacket $128.00

Don't rely on REI's in-house clothing and equipment collections. This simple jacket is a great choice for cold weather hiking and morning commuting. Its interior is made of quilted insulation material and has a smooth appearance. It is a good choice for people who don't like the appearance of pufferfish filling. The exterior and padding of the jacket are made of recycled nylon and recycled polyester, respectively.

Purchase: REI Co-Op synthetic down jacket US$104.29 (original price US$149.00) 30% discount

Don't want to spend too much money on a jacket? Amazon Essentials has a simple option, no bells and whistles, but has everything you need to keep warm. The funnel collar can be zipped all the way to keep warm, and you can put your jacket in a small bag. In addition, it has almost all imaginable colors.

Buy: Amazon Essentials synthetic down jacket $40.90

Everyone will reach a certain age and feel the need to buy a vest. For some people (see: Financial Brothers), this age is in your 20s and 30s, while for others, once you become a father. The vest makes sense; you can keep your arms free while keeping the core warm, or you can wear a warmer outer layer when it's really cold. This vest has a warm polyester padding (the "duck" in the jacket's name refers to a durable cotton canvas, not a down padding). This vest comes in black or brown.

Buy: Carhartt synthetic down jacket $69.99

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