This cute and stylish jacket is perfect for a mid-day skate ski in the winter months or for a meandering hike in the Spring or Fall.
The Atom LT is a super cute jacket, perfect for wear around town or while hiking in the wilderness.
Featuring 60 g/m2 of Coreloft insulation, this jacket is not the warmest out there. Scoring a six out of ten, it does have some great warmth features such as a cinch cord at its hemline and a snug insulated hood to lock in heat. Though, many of our testers noted that warmth was lost from the breathable side panels and thinner fabrics. The outer water-resistant 20-Denier shell fabric gives the Atom LT an airy feel, while the fleecy panels under the arms offer maximum coziness and breathability.
The single pull on the hem locks in warmth.
When wet, it still provides excellent insulation, keeping you warm if caught in an unexpected rainstorm (though not dry). That all said, this jacket performs well as a stand-alone piece in temperatures that dip to just above freezing. With a good layering system (i.e., mid-layer with a base layer), it would provide better warmth overall. It is also easy to layer with another jacket to function as an excellent mid-layer.
Weight & Compression
As one of the most compressible and lightweight jackets in this review, it is built for adventuring light. The design and thinner fabrics allow it to get as small as a small bag of almonds, packing away nicely into a backpack. That said, this jacket does not feature its stow-away system (which is a bummer), making it a little less versatile than other contenders. On the scale, this coat weighs 11.18 oz, making it a lightweight insulated jacket to be worn on or while stuffed away into a pack.
This jacket rolls into its hood nicely. It's also one of the most compressible jackets without its own stow-away system.
While not the most weather-resistant jacket out there, it still does the trick when considering the performance expectation for an insulated jacket. This jacket provides decent water resistance but lacks at cutting out the wind because of the porous and breathable face fabric. The fabrics are fairly thin and don't offer a whole lot of protection from the wind.
Like most of the models in this review, it has a DWR finish that repels water but won't keep you dry during a full out rainstorm. It functions well in a dry climate with dry snow and kept us warm in climates like that of Colorado. However, when the moisture in the air increases (in places like the Northwest), any adventurer would benefit from a waterproof shell that can full repel wet snow or precipitation, as this jacket will not keep you completely dry.
Water beads for a while, but after about four minutes in a downpour, the fabric will wet out. That said, the insulation still provides warmth (as all synthetics do). The fleece side panels also repel water, thanks to the Hardface Technology.
The face fabric does a great job repelling both wind and water.
While the 20-Denier shell cuts the winds that aren't too cold or gusty, the fabric and thinner insulation combination isn't enough to keep the wind out. The breathable side panels are also an area where wind resistance deteriorates as a trade-off for breathability. While the face fabric repels the wind better than the side panels, it's still not enough. This jacket would benefit from a wind jacket or even a shell for the ultimate in weather protection.
Comfort & Coziness
Featuring cozy fleece paneling and some great technical features, it is quite comfortable to wear all day. We love the cozy fleece panels under the arms that are not only soft and touchable but also provides great temperature regulation, so your armpits don't get swampy. Additionally, these panels, along with the jacket's gusseted underarms and the shell's stretchy fabric, allow for fantastic mobility while you're on the move. The face and lining fabric are slippery, making it easy to put on layers either below or above (without them sticking to the jacket).
The pockets are decently sized. There are two hand warming pockets and a chest pocket for additional storage.
It's cozy, and the snug hood fits well under a helmet while the hood cinches at the back to provide a great fit. We found that the fitted and stretchy fabric, in addition to the high collar, provide enough room to nuzzle down into when the wind started to blow.
The hood features a cinch pull for a more precise fit.
The stretch knit cuffs of the jacket add to the sophisticated styling of this piece and feel nice on the wrists, and are glove compatible. Finally, we like the internal chest pocket and its fleece-lined hand pockets, but wished they were a little deeper.
The gusseted wrist is elastic and comfortable.
With a continuous face fabric design and stretchy, super breathable side paneling, it is great for aerobic endeavors in the Winter. Its side panels and thinner fabric design allows warm air to escape when you start to heat up. We found that when hiking uphill, we didn't have to take this jacket off in fifty-degree weather because it did such a great job at regulating temperature. With a combination of decent weather protection and breathability (and lightweight design), this jacket is perfect for alpine adventures or rock climbing at the local crag.
The side paneling provides additional breathability.
While this jacket is quite breathable, it's not suited for high aerobic use for, say, winter running. A model with a mobile face fabric is better suited for aerobic activities. Worn with an excellent base layer, this jacket can off-load heat while hiking uphill and keep you warm on the downhill.
The Atom LT is super breathable and a perfect option for morning runs due to its breathable face fabric and paneling under the armpits.
Style & Fit
Arc'teryx is known for its sleek styling, awesome colors, and slim athletic fit, so we weren't surprised at all when we slipped on the Atom LT and felt just a little sexier. At the top end of outdoor chic, this jacket is flattering through the torso and fits slightly longer-armed ladies perfectly.
Style is important to consider. Whether you're out hiking or hanging around town, looking great is always a fine extra. Here we see the Atom LT, a favorite amongst our testers.
Those with broader shoulders might experience a bit of snugness, especially with layers on underneath, but with the stretch fabric, we didn't find the slight tightness to be demobilizing in the least. The torso falls at hip length, and its hand pockets blend right into the jacket's design.
A look at the overall style, length, and fit of the Atom LT. Each individual review has pictures that outline the different fit and style features of each jacket tested.
Finally, the fleece panels under the arms provide a two-toned contrast that adds interest to this super cool piece. Overall? A stylish and well-fitting jacket.
The hooded version is a little more expensive (and on sale in some places online) and features some of the best craftsmanship and durability of any piece tested. Unlike several of the other insulated jackets that we reviewed, the Atom LT didn't get any snags or tears throughout our testing process. Our testers wore this piece crack climbing and put it to the test while bushwhacking in the backcountry - and it endured beautifully. The outer shell is surprisingly abrasion-resistant despite its seemingly fragile feel.
The stitching is also very tight, which also helped prevent unwanted snags. Overall, our testers appreciate its solid construction and wish that all manufacturers would provide the same level of craftsmanship. Given its durability, versatility, and lifetime warranty, we think it's well worth the money.
Explore, adventure, and have fun! Take it with you on your next big adventure.
The Arc'teryx Atom LT is a great option for alpine adventures because of its great technical features that balance mobility and breathability. We love this hoody's flattering design and breathable performance. Wear it as a perfect stand-alone piece during the warmer months or layer it under another jacket during the coldest days of the year. Wear it around town or on your most technical missions skiing, hiking, camping, or ice climbing - it will serve you well. It's only a little expensive.