The Electron Pro has been designed to offer alpinists and winter mountaineers an ultra-warm down jacket without the bulk. It’s built with a mix of micro and midi baffles, body-mapped to give you more warmth or mobility where it’s needed. It has a water- and wind-resistant Pertex® Quantum Pro outer to cope with snow and spindrift, and it’s filled with 800FP down providing excellent warmth for weight.