This blue Arc'teryx Atom SL hooded jacket is made with water-repellent fabric and Coreloft insulation. A packable design, it has a high neck, adjustable hood, long sleeves, stretch fleece side panels, a zip pocket, logo detail and half zip fastening. It's no wonder this Arc'teryx jacket is called Atom – we're feeling positively charged at the prospect of adding it to our wardrobe.