Warm weather is never a constant, even in summer. Superlight and packable – it stuffs into its chest pocket – the Atom SL Anorak hits that zone where insulation is required, but in an amount that suits milder conditions. Strategically placed at the chest and back, the Coreloft™ insulation is efficient, light, and compressible. The Tyono™ 20 outer balances airflow with wind resistance, a DWR finish repels moisture, stretch fleece side panels ventilate, and an uninsulated hood adds coverage.