The Electron is a mid-weight technical down vest, with a water-resistant Pertex outer shell, designed for year-round climbing and mountain use.Using the same high-quality 800FP RDS Certified European Goose Down as our Electron Jacket this vest offers high levels of emergency warmth and protection for the mountains. A combination of midi and mini baffle sizes allows for controlled down migration and elasticated arm holes allow for maximum freedom of movement and reaches when climbing.