Arc'teryx Women's Atom LT Hoody
$259.00
If you have one, you know: this one of our most trusted, best loved hoodies. Delivering proven, versatile performance as a midlayer or standalone, the Atom LT provides effective warmth for low-output and start-stop activities. Light, resilient and compressible, Coreloft™ synthetic insulation performs even if wet, and the hybrid outer combines wind protection at the body with breathable stretch fleece panels at the sides. The result is a highly versatile piece that performs across a range of conditions and activities.
Why is this a Guide Pick?
Solveig Waterfall
I love the stretch panels on the sides of the Atom LT. They provide for great range of motion and makes it a lot more breathable than other synthetic insulation piece for high output activities.
Size Chart
XS (0-2) | SM (4-6) | MD (8-10) | LG (12-14) | |
Bust | 33" | 35" | 37" | 40" |
Waist | 25" | 27" | 29" | 32" |
Hip | 36" | 38" | 40" | 43" |
Sleeve | 29.5" | 30.5" | 31.5" | 32.5" |
Product Details
This trim hybrid hoody is designed as an active-use insulation layer, providing vital core warmth with liberal mobility and breathability. Lightweight and compressible, the Atom LT Hoody features Coreloft™ insulation in the torso, arms and hood. The side panels and underarms feature Polartec® Power Stretch® with Hardface® Technology, delivering stretch mobility and breathability. A wind and moisture resistant outer shell extends stand-alone usability.
Windshell
The benefit of taffeta fabrics is their light, airy nature with an ability to turn aside wind. The Atom series have a taffeta outer lining that is treated with DWR (durable water resistant) finish to give them a long-lasting ability to shed moisture.DWR protects against light precipitation.
No Sweat
Mid layers that can function as outer layers have varied degrees of weather shedding capability; they also have varied degrees of moisture management. In addition to being made of breathable Coreloft™ insulation, the Atom LT has breathable side panels of Polartec® Power Stretch® with Hardface™ technology to help regulate temperature during exertion.
Pack Light
Highly compressible, Atom pieces pack down into a tiny parcel of stored warmth. Store the jacket inside its own pocket, or tuck it into a sleeve or inside the hood if you are not restricted by space. A quick shake restores the original loft, time and again.
Technical Features
- Moisture-resistant outer face fabric
- Breathable
- Insulated
- Lightweight
- Compressible and packable
- Wind resistant
Construction
- DWR finish (Durable Water Repellent) helps repel water from fabric surface
- Composite construction
- Breathable, stretch side panels for enhanced comfort and mobility
Patterning
- Articulated elbows
- Gusseted underarms
- Trim fit for base layer or light mid-layer use
Hood Configuration
- Insulated hood
- Hood fits under helmet
- ScubaHood™
Zippers & Fly Configuration
- Full front zip with wind flap
Cuff & Sleeves Configuration
- Stretch-knit cuffs
Hem Configuration
- Laminated hem
- Adjustable hem drawcord
- Drop back hem
Pocket Configuration
- Internal chest pocket
- Two hand pockets
Weight
- 330 g / 11.6 oz
Materials
- Polartec® Power Stretch® with Hardface® Technology—88% polyester, 12% elastane, 230 g/m². A four-way stretch fabric that allows for excellent athletic movement and good breathability to maintain comfort. Some products feature Hardface® Technology for a higher level of abrasion resistance.
- Tinthan™ 100% nylon / 1.9 oz/yd², 46g/m². 20D mechanical stretch nylon rip stop with an air permeable polyurethane coating DWR finish. This lightweight stretch fabric has good abrasion resistance for its weight.
- 60 g/m² Coreloft™ insulation

Women's Atom LT Hoody
$259.00