The Electron Jacket is a mid-weight, technical down jacket, with a water-resistant Pertex® outer shell, designed for year-round climbing and mountain use. New for Autumn/Winter â15, the Electron is designed with a stitch-through construction throughout, with varying size baffles to help reduce bulk in key areas and to help eliminate cold spots. 190g/7oz (size Large) of 800FP European Goose Down provides exceptional levels of warmth and features a small-volume helmet-compatible hood. Key technical features include YKK® VISLON® zips throughout, elasticated stretch woven cuffs and a zipped internal security pocket. The Electron Jacket is designed for cold weather climbing and mountain use, however with high levels of comfort and packability, it is suitable for day-to-day winter use. FIT NOTES (Regular Fit) This piece is designed with a regular fit to accommodate multiple layers worn underneath in cold environments.