HIMALI Accelerator Down Jacket Evaluation

Backside Line

The HIMALI Accelerator (males’s / ladies’s) might lack the title recognition of different out of doors manufacturers on finest down jackets information – for now – but it surely’s tricked out with premium supplies and performs effectively. Over the previous 9 months, we’ve worn it for shoulder-season backpacking and tenting, summit snack breaks at 13,000 toes, a Midwest blizzard, and on a regular basis heat. We love its versatility. 

On paper, the Accelerator’s weight and technical specs mirror the award-winning Arc-teryx Cerium. Its down scores bonus factors as a result of it’s super-lofty (850 fill energy), hydrophobic, and responsibly sourced. Within the discipline, we beloved how this jacket saved us heat at camp, layered beneath our shells, and shrugged off sweat-inducing slogs up steep and snowy mountains. 

This isn’t the warmest down jacket on our checklist. However that’s the great thing about it. The Accelerator balances heat with mobility and packability. Plus, HIMALI snuck in a number of design options which make it much less vulnerable to sleet, snow, and sweat — that are kryptonite for the typical down jacket. 

The HIMALI Accelerator’s athletic match could also be too tight for stocky hikers, however that comfortable match boosts its power effectivity and breathability whereas chopping down its packed measurement. It additionally makes it simpler to layer this puffy beneath a shell. If it matches you, the Accelerator is a good worth for hikers and backpackers who need a versatile down jacket that may juggle chilly campsites together with lively mountain pursuits. 

How We Examined

We largely examined the HIMALI Accelerator whereas shoulder-season tenting in New Mexico’s Sangre de Cristo mountains and winter tenting close to White Sands Nationwide Park. We additionally packed it for summit lunches and emergency use on high-elevation hikes and wore it casually in numerous temperatures to gauge its consolation vary. Our take a look at situations additionally included a blizzard within the Midwest with beneath zero temperatures and winds gusting to 50 mph.  

Consolation

We discovered the Accelerator down jacket snug to put on, but it surely’s not the very best choose for all physique sorts. It is a premium down jacket made for out of doors pursuits – not an informal down layer for that morning Starbucks run. 

The HIMALI Accelerator has an athletic match. Typically talking, it’s a cosy match — which makes the jacket extra environment friendly at trapping heat air towards your physique. This comfortable match additionally improves breathability. Nevertheless, its efficiency match might really feel constricting in case you’ve obtained an enormous chest, broad shoulders, or an IPA stomach. That being mentioned, CleverHiker editor Jory Brass pulled off this match comfortably — although he’s not constructed for velocity. 

We additionally like this low-bulk match for consolation on the transfer. Despite the fact that it’s comfortable, the Accelerator’s articulated lower maintained mobility in our arms once we scrambled and reached over our heads throughout discipline testing. It additionally matches comfortably beneath a backpack or harness.

Heat

Throughout testing, the HIMALI Accelerator hit the candy spot for 3-season mountaineering, backpacking, and tenting. As a light-to-midweight down jacket, this layer is heat with out being too cumbersome on a backpacking journey or too toasty whereas actively mountaineering within the chilly. 

Its 850 fill-power down offers the HIMALI Accelerator probably the greatest warmth-to-weight ratios of the down jackets we examined. Once we examined them side-by-side at camp, the HIMALI Accelerator was barely hotter than Patagonia Down Sweater (800 fill energy), in addition to lighter and extra packable.

We additionally wore the Accelerator throughout an Iowa blizzard with 30-50 mph winds and beneath zero temperatures. We stayed surprisingly heat whereas doing easy out of doors chores (however admittedly weren’t in these extreme situations for an prolonged time). 

The Accelerator isn’t the only option for arctic situations or bitterly chilly climate. Throughout our discipline exams, we felt toasty in camp with temperatures within the 30s with out an insulating baselayer. Nevertheless, we added layers beneath the HIMALI Accelerator when temps dipped into the 20s whereas tenting at New Mexico’s Mt. Wheeler. 

We desire artificial jackets for high-output winter actions as a result of they handle moisture higher. Nevertheless, we wore the HIMALI down jacket for winter hikes within the teenagers and twenties with out getting too chilly or too toasty on the path.

Weight & Packability

Weighing 11 (ladies) to 12 ounces (males), the Accelerator locations within the prime half of the down jackets we examined for weight and packability. It’s not as cumbersome as expedition-grade down jackets. On the identical time, it’s not as ultralight because the 1000 fill-power down or the funds down jackets we examined.

It’s additionally extremely packable. Due to its high-quality down (850 fill), the Accelerator wants much less insulation than the typical down jacket (600-700 fill) to maintain you heat. Plus, that premium down is very compressible if you really want to smush it down in your pack. For comparability, our HIMALI Accelerator weighs an oz lower than our Patagonia Down Sweater and packs down a lot smaller. 

For higher or worse, the HIMALI Accelerator down jacket comes with an hooked up stuff sack inside its entrance left pocket. Some like that characteristic for packability, although others discover it will get in the best way along with your hand. These items sack packs the jacket right into a spherical form that’s a bit bigger than a Nalgene bottle. 

Climate Resistance

The HIMALI Accelerator is likely one of the few jackets on our checklist with water-resistant down – offering some peace of thoughts in sleet, heavy snow, and sweaty actions.

Usually, moisture is down’s kryptonite. If down will get moist, it loses its loft – which negates its insulating powers. That’s uncomfortable – and doubtlessly harmful – in chilly climate. Luckily, HIMALI has taken a number of steps to extend the Accelerator’s skill to fend off loft-killing moisture. 

Like most down jackets, it includes a sturdy water repellent (DWR) end to shed mild snow and sprinkles. The Accelerator additionally makes use of hydrophobic down that’s handled with DWR to make it immune to sweat and water.  HIMALI additionally snuck artificial insulation into high-moisture areas: beneath the arms and on the collar. These small touches hold sweat, snot, and steam away from these susceptible down plumes. 

All the above make the HIMALI Accelerator extra applicable for damp situations and calorie-burning winter play than different down jackets. 

We have been additionally impressed by the wind resistance of the Accelerator down jacket’s Pertex Quantum shell. Throughout blizzard situations within the Midwest, the jacket’s face cloth and hood sealed us off from -40 F windchills once we wanted to do out of doors chores within the blowing snow.

Breathability

The HIMALI Accelerator Jacket emphasizes warmth retention over breathability – which is strictly what you need from an insulating midlayer or outer layer. The mix of high-loft down and a premium shell cloth – Pertex Quantum – excels at trapping heat air contained in the jacket to maintain you heat. Whereas these supplies are nice at trapping heat, the jacket nonetheless maintains breathability.

Understand that breathability doesn’t confer with airflow (or sweat). The definition of breathability is “moisture vapor transmission”, or the flexibility for evaporated moisture (not air or sweat) to move by supplies. Breathability primarily works by strain differentials. When warmth and humidity contained in the Accelerator jacket are larger than the skin air, moisture vapor can move by the down plumes and Pertex Quantum cloth (“breathe”), due to that strain gradient. 

We couldn’t precisely take a look at this jacket’s breathability as a result of we lack scientific gear to measure moisture vapor or the supplies’ RET (Resistance to Evaporative Switch).

Nevertheless, we discovered the HIMALI Accelerator breathes finest throughout high-intensity actions in chilly climate, with the best differential between the within and out of doors air. The Pertex Quantum cloth maintains physique warmth over breathability and nonetheless transmits moisture vapor in most situations. Lastly, the jacket’s comfortable match improves its breathability. 

Ought to You Purchase the HIMALI Accelerator Down Jacket?

The HIMALI Accelerator Down Jacket is a good purchase for these in search of a performance-oriented puffy to crush chilly nights on the campsite and extra lively winter play. We beloved its premium down, efficiency match, and moisture-resistant options. It’s additionally packable and succesful for shoulder season backpacking and climbing. 

The Accelerator’s athletic lower is flattering on most physique sorts and extremely practical, rising its warmth effectivity, breathability, and packability. However some broad-shouldered or big-bellied hikers might desire a extra informal match or must measurement up. 

Total, we predict the HIMALI Accelerator jacket is a wonderful selection. We advocate it as a flexible outer layer or midlayer to remain heat at camp, to savor chilly and wind-whipped summits, and to hike or climb in wintry situations with little danger of snow or sweat compromising the down’s lofty insulating energy.

What Different Down Jackets Ought to You Contemplate?

The HIMALI Accelerator ranks effectively on our information to the very best down jackets. Listed here are another prime contenders:

Arc’teryx Cerium Evaluation: The HIMALI Accelerator has very comparable specs to the award-winning Arc-teryx Cerium, together with a mixture of body-mapped down and artificial fill in high-moisture areas.

Rab Neutrino Professional Evaluation: For those who desire a hotter down jacket for much less lively use, the Rab Neutrino Professional ranks extremely for heat, consolation, and climate resistance in our discipline testing. It’s our prime choose when heat issues most. 

Patagonia Down Sweater Evaluation: The Patagonia Down Sweater is an effective various in case you’re frightened concerning the Accelerator’s comfortable match. It’s about the identical worth however gives barely looser sizing and extra shade choices.