Performing as midlayer and standalone across a broad range of activities and output levels, the iconic Atom is an Arc‘teryx mainstay. Over time, we have refined the design to elevate performance, improve durability and extend its versatility. Its Coreloft™ Compact insulation retains heat when wet and withstands repeated packing and unpacking. Light, soft and durable, the Tyono™ 20 face fabric resists wind and weather, and stretch fleece side panels improve ventilation and freedom of movement.

The Atom Jacket was previously the Atom LT Jacket.

Size and Fit Tips: Fitted Fit - This trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably over our first layers. This model's fit has evolved. Before you check out, please make sure to reference our sizing chart to determine your correct size.

Model Measurements 

Height: 5ft 10"/177.8cms, Chest Width: 34"/86.4cms, Waist: 24"/61cms, Hips: 35"/88.9cms
Wearing Size: Small

An alpine-ready midlayer in cold conditions, a warming layer during rest phases – the iconic Cerium is made for backcountry missions. Featuring a refined design utilizing more sustainable materials, it delivers outstanding warmth, packs small, and weighs just 255 grams. Responsibly-sourced 850 fill down – with Coreloft™ synthetic used in areas prone to moisture – provides premium insulation. The recycled 15D Arato™ nylon outer is light and durable, a bio-derived liner reduces petroleum use, and the streamlined design is articulated for freedom of movement.

The Cerium Jacket was previously the Cerium LT Jacket.

Size and Fit Tips:

Fitted Fit - This trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably over our first layers. This model's fit has evolved. Before you check out, please make sure to reference our sizing chart to determine your correct size.

Steeped in the alpine, this versatile hoody has warmed climbers, hikers, backcountry skiers and downtown commuters. Worn as a midlayer or standalone, it performs across a range of conditions and output levels. Coreloft™ Compact insulation retains warmth even if wet and has loft retention that withstands years of packing and unpacking. The water resistant Tyono™ 20 face fabric is soft, breathable and durable, stretch side panels improve ventilation and freedom, and the insulated StormHood™ adds warmth.

Features:

-Versatile synthetic insulated mid layers with a high degree of weather resistance.

-Man-made insulation with quick dry times, durability and retains warmth when damp.

-Versatile high performance designs for diverse activities and conditions.

-Adding pigment at the polymer level which saves water, reduces C02 emissions and increases fabric colourfastness. 

Model Measurements

Height: 5ft 9"/175.3cms, Bust Width: 31"/78.7cms, Waist: 24"/61.0cms, 35"/88.9cms
Wearing Size: Small, Wearing Colour: Black Sapphire

Efficient and versatile, and providing exceptional warmth for its weight, the Cerium LT down hoody functions as a mid layer or standalone piece in cool, dry conditions. Premium 850 fill-power down is resilient and warm, the Arato™ 10 shell provides lightweight durability, and Down Composite Mapping™ strategically places Coreloft™ synthetic insulation in moisture-prone areas. Articulated construction moves with the body, and the insulated StormHood™ provides coverage without compromising range of vision.

CERIUM
Streamlined, minimalist and lightweight technical down insulation. High warmth to weight ratio.

ESSENTIALS
Versatile high performance designs for diverse activities and conditions.

LIGHTWEIGHT
High performance, minimalist design that is durable for its weight.

DOWN INSULATION
Highly efficient natural insulation that compacts well and offers excellent warmth to weight.

FIT- Slim