Our Atom LT products have non-locking zippers by design. One purpose of the non-locking zipper is that it is easier to operate with one hand. This design feature also helps to limit the possibility of damage to the zipper and lightweight face fabric directly adjacent to the zipper.
Versatile combination for layering on cold wet days or as an outer layer in cold dry conditions. Tthis warm mid-layer features composite materials that provide balanced warmth and breathability. The arms and torso are fortified with Coreloft™ insulation, and the side panels and underarms incorporate Polartec® Power Stretch® with Hardface® Technology to increase mobility and breathability. A wind and moisture resistant outer shell extends stand-alone usability.
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Arc'teryx Coreloft™ Insulation
Developed by Arc'teryx, Coreloft™ is a synthetic insulation made of staple fibres in mixed sizes that are crimped to trap air and retain warmth. Available in different thicknesses for end-use performance and comfort.
Lightweight and highly compressible
Durable and resilient
Retains its warmth in humid and wet conditions and dries quickly if wet
Arc'teryx Fit Guide - Trim Fit
These trim fitting garments share motion-friendly traits with our Athletic fit, but are patterned with lower volume for reduced bulk. Our trim fit is sized for a base layer and a trim synthetic or down filled mid-layer
To find out how to calculate your body measurements, view our Sizing Charts:
Insulated mid layers made with hydrophobic synthetic material that resists absorbing moisture. Outer fabric has a water-repellent finish.
LT | Light Weight
Built with highly durable top performance materials but designed with a streamlined minimalist set of features to provide very light weight.
Full Feature List
Moisture-resistant outer face fabric
Compressible and packable
DWR finish (Durable Water Repellent) helps repel water from fabric surface
Breathable, stretch side panels for enhanced comfort and mobility
Trim fit for base layer or light mid-layer use
Soft, smooth lined collar
Zippers & Fly Configuration
Full front zip with wind flap
Cuff & Sleeves Configuration
Drop back hem
Internal chest pocket
Two hand pockets
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.
Coreloft™ 60 (60 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.
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.