The Atom Jacket from Arc'teryx is the simple answer to the eternal question: which jacket should I choose today? This is a lightweight, technical and remarkably versatile jacket that works equally well on its own as a reliable outer layer during activity, and as an insulating mid-layer on longer trips and in rough weather. It is designed to follow the body's movements, breathe when you push yourself – and retain warmth when you need it most.

The synthetic Coreloft™ insulation delivers reliable warmth even in damp conditions, making this jacket a better choice than down in high-intensity activities such as hiking, ski touring or climbing. The outer fabric, made from lightweight and durable Tyono™ 20 nylon, is both windproof and water-repellent, whilst still allowing good airflow. The inside is soft and comfortable, with a recycled, breathable lining that regulates body temperature effectively. Stretchy fleece panels under the arms provide extra ventilation and freedom of movement – ideal when you are active in changing terrain and weather.

The jacket is fitted with the unique No Slip Zip™ front zip, which makes it easy to adjust without it sliding down. Practical pocket solutions – including an internal chest pocket and two hand pockets with concealed zips – provide ample space for small items on the go. The cuffs are made with stretch-knit for comfort and a close fit, and the hem can be adjusted to keep the wind out.

The Atom Jacket is not only functional – it is also made with sustainability in mind. The outer fabric, insulation and lining are partly recycled and bluesign®-approved, and the jacket is treated with a PFC-free water-repellent finish (FC0 DWR), which provides good protection against light precipitation without harmful chemicals.

This is a well-considered garment for those who want one jacket that works for most situations – and that delivers both technical performance and lasting comfort.