Focused versatility. Functional minimalism. So compact and light, there is no reason to leave it behind. The Atom SL is for situations when insulation is required, but in an amount that meets milder conditions. The soft Tyono™ 20 outer balances airflow with wind protection and has DWR finish for protection from light showers. Placed at the chest and back, the Coreloft™ insulation is efficient, light, and compressible. Stretch fleece side panels ventilate and an uninsulated hood adds coverage.
The Atom SL is designed to handle subtle climate shifts, and each of its fabrics is intentionally selected to manage moisture and provide comfort. Soft, easily compacted, and resilient, the Tyono™ 20 shell material uses fine denier yarns that allow a fabric configuration that is surprisingly strong for its light weight. Balancing air permeability with wind resistance, the material allows airflow during active periods, but helps cut wind chill during static moments. 40g/m² Coreloft™ Compact insulation is highly compressible, insulates if wet, permits airflow, and delivers its superior performance for very little weight. Sleeves are lined with a comfortable mesh fabric, and lightweight fleece side panels help provide thermal performance and ventilation. Articulated sleeves and gusseted underarms extend freedom of movement.
Arc’teryx designers know that a thoughtful minimalism delivers more performance. Created to be so compact and light there’s no reason to leave it behind, the Atom SL has only necessary features and uses ultralight fabrics. The DWR (durable water repellant) treated StormHood™ hood is uninsulated, making it ideal for minimizing wind chill or providing protection in light rain. The trim fit minimizes bulk and layers easily, and the insulation is placed only where it’s most needed, in the core, to reduce weight and bulk without sacrificing appropriate thermal performance. The result is a hoody that provides efficient shoulder season insulation, stuffs to the size of a grapefruit, and weighs a mere 235 grams.
Moisture-resistant outer face fabric
Compressible and packable
Design & Fit
Trim fit for base layer or light mid-layer use
Composite Mapping Technology strategically places each fabric for most effective protection and climate management
Fleece stretch side panels allow for ventilation
Gusseted underarms for mobility and comfort
Adjustable, low profile uninsulated StormHood™
Zippers & Fly Configuration
Full front zip with chin guard
No Slip Zip™ front zipper
Custom TPU zipper pulls
Cuff & Sleeves Configuration
Uninsulated, mesh lined sleeves give light protection and regulate temperature
Adjustable hem drawcord
Drop back hem
Two hand pockets with zippers
Contains materials that meet the bluesign® criteria
DWR (Durable Water Repellent) finish repels moisture
Layers are the instruments of keeping you dry, warm and using your energy efficiently. Put into the right systems, a good sequence of layers provides you with weather protection, moves moisture away from your skin, conserves or dissipates heat, and does this in the least amount of time.
The graph below shows where this product sits within a layering system. Use the layering guide to select additional pieces for your system and understand how they fit together. Find out more about how to layer on Arc'teryx's Layering Page.
Coreloft™ 40 (40 g/m²) insulation. Made with highly crimped multi-denier siliconized polyester yarn, this lightweight, breathable, and thermally efficient, 100% polyester staple fibre is very compressible and has excellent loft retention.