Performing as midlayer and standalone across a broad range of activities and output levels, the iconic Atom LT 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.

Redesign includes an update to the cuff construction for easier on/off and layering, an updated material package for enhanced durability, updated fit, and a dope dyed liner.

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

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

Arc'teryx Essentials
Versatile high performance designs for diverse activities and conditions.

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