Here is my selection of the best synthetic insulated jackets for 2021 which I would consider buying for my next winter or hiking trip.
Wearing a synthetic insulated jacket over a down jacket can have several reasons.
Either you are just looking for an alternative to down because of ethical reasons or you are planning to wear your jacket in a damp or humid environment where down may lose its insulation capabilities when it gets wet.
On our snowshoeing trip in Finnish Lapland, we could choose between wearing a synthetic or down jacket due to the low humidity.
|Arc’teryx Cerium LT Hoody||295 grams / 10.4 oz.|
|Outdoor Research Deviator Hoody||11.3 oz. / 321 grams|
|Black Diamond Access Hoody||11.6 oz. / 330 grams|
|Montane Halogen Alpha Jacket||12.4 oz. / 351 grams|
|Outdoor Research Cathode Hooded Jacket||13.4 oz / 379 grams|
|Arc’teryx Proton AR Hoody||15 oz. / 425 grams|
|Montane Fusion Alpha Jacket||15.1 oz. / 427 grams|
|Arc’teryx Nuclei AR Jacket||16.2 oz. / 460 grams|
|Outdoor Research Uberlayer Hooded Jacket||19.9 oz. / 563 grams|
|Rab Nebula Jacket||20.5 oz. / 580 grams|
|Mountain Equipment Fitzroy Jacket||23 oz. / 645 grams|
|Rab Photon X Jacket||24 oz. / 670 grams|
|Arc’teryx Fission SV Jacket||33 oz. / 935 grams|
Arc’teryx Cerium LT Hoody
Weight: 10.5 oz. / 295 grams
The Arc’teryx Cerium LT Hoody is not a pure synthetic insulated jacket and replaces the synthetic insulation with 850 goose down on areas where moisture may build up.
With 295 grams it’s the lightest jacket in our list. This jacket is useful for active people, but you may rather pick a different jacket if you are planning to visit a very wet or humid place.
You can get the Arc’teryx Cerium LT Hoody at Amazon.
Arc’teryx Fission SV Jacket
Weight: 33 oz. / 935 grams
The Arc’teryx Fission SV Jacket is a waterproof, insulated jacket with Coreloft™ insulation.
This jacket is the warmest synthetic insulated all-mountain jacket in Arc’teryx product range which is also waterproof while still breathable.
You can get the Arc’teryx Fission SV Jacket at Amazon.
Arc’teryx Nuclei AR Jacket
Weight: 16.5 oz. / 460 grams
The Arc’teryx Nuclei AR Jacket is a good choice for alpine climbers and is filled with Coreloft 100 insulation with a full seam taped GORE® THERMIUM™ shell which is water resistant and windproof but also very breathable.
The jacket is designed with an articulated patterning which increases ergonomic freedom.
Moreover, the jacket comes with a helmet-compatible insulated StormHood™ which does not impact your vision.
Arc’teryx Proton AR Hoody
Weight: 15 oz. / 425 grams
The Arc’teryx Proton AR Hoody is the warmest jacket in the Proton Series and is balancing warmth and airflow.
You can wear the jacket either as a soft shell or as a mid-layer under a waterproof shell.
The jacket has a trim fit design and an insulated adjustable hood which is helmet compatible.
You can get the Arc’teryx Proton AR Hoody at Amazon.
Montane Fusion Alpha Jacket
Weight: 15.1 oz. / 427 grams
The Montane Fusion Alpha jacket has been developed by using thermal imaging data and has been designed for alpinists.
Montane Halogen Alpha Jacket
Weight: 12.4 oz. / 351 grams
The Montane Halogen Alpha Jacket has been designed for stop-start activities in the mountains. The jacket is made of Polartec Alpha.
You can get the Montane Halogen Alpha Jacket at Amazon.
Mountain Equipment Fitzroy Jacket
Weight: 23 oz. / 645 grams
The Mountain Equipment Fitzroy Jacket is a wind and water resistant jacket filled with Primaloft GOLD insulation.
It also comes with an insulated hood with wired visor. The Mountain Equipment Fitzroy Jacket is currently my go-to insulated jacket which I was wearing in the Scottish Highlands.
Outdoor Research Cathode Hooded Jacket
Weight: 13.4 oz. / 379 grams
The Outdoor Research Cathode Hooded Jacket comes with an insulated hood and is filled with Primaloft Gold. The Cathode Hooded Jacket has Schoeller® underarm side panels that can breathe and stretch.
The jacket is an excellent choice for cold and wet alpine environments and those looking for a lightweight and breathable solution.
You can get the Outdoor Research Cathode Hooded Jacket at Amazon.
Outdoor Research Uberlayer Hooded Jacket
Weight: 19.9 oz. / 563 grams
The Outdoor Research Uberlayer Jacket is made of Polartec Alpha and is an excellent choice for ski tours or climbing. It offers breathability and dries quickly.
You can get the Outdoor Research Uberlayer Hooded Jacket at Amazon.
Outdoor Research Deviator Hoody
Weight: 11.3 oz. / 321 grams
The Outdoor Research Deviator Hoody is made of Polartec Alpha insulation and has been designed for active pursuits to stay dry and warm. The hood is made of Polartec Power Grid.
You can get the Outdoor Research Deviator Hoody at Amazon.
Rab Nebula Jacket
Weight: 20.5 oz. / 580 grams
The Rab Nebula Jacket is a featherless synthetic insulated jacket which dries quickly.
The jacket is designed as an all-rounder which is perfect for climbing and winter walking.
The jacket has a helmet compatible hood for climbing use and a Pertex Endurance® shell to make the jacket water resistant.
You can get the Rab Nebula Jacket at Amazon.
Rab Photon X Jacket
Weight: 24 oz. / 670 grams
The Rab Photon X Jacket is a water-resistant winter jacket filled with Primaloft® Gold synthetic insulation and was designed for use in harsh Scottish Winter conditions.
The jacket features zoned synthetic insulation to eliminate cold spots and is reinforced in key areas. The jacket also comes with a helmet-compatible hood.
You can get the Rab Photon X Jacket at Amazon.