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Even in summer, warm weather can shift quickly to cool. Superlight and packable, the Atom SL Anorak provides just the right amount of insulation required to handle these subtle – but noticeable – drops in temperature. 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.