Stop-and-go activities such as ski touring, alpine mountaineering or climbing are all about climate control. Phases of intense physical activity are often followed by static phases in which you run the risk of cooling down. The thermo-regulating Ortles Hybrid TirolWool Responsive Jacket is designed to fulfil the specific insulation needs of different parts of the body during high-octane activities in cold conditions, while its robust Durastretch panels make it ideal for rugged alpine use. Hybrid design meets hybrid insulation - TirolWool Responsive is a proprietary, lightweight insulation material that combines innovative polyester fibres enriched with thermoreactive minerals and wool from Tyrolean sheep. The heat emitted by the body is absorbed and converted into infrared radiation, which is stored and returned to the body - so you stay warmer for longer. TirolWool Responsive is water-repellent, breathable and keeps you warm even when wet. The customised, insulated hood, which can be adjusted at the back, offers additional protection. And with its small pack size, this jacket can be easily stowed in any rucksack and fits under any hardshell.