The Ortles Tirolwool Celliant Jacket from Salewa is a warm jacket that uses an unusual combination of wool from Tirolean sheep with some hi-tech polyester fibres enhanced with thermo-reactive minerals. Heat emitted by the body is absorbed and converted into infrared radiation, which is stored and reflected back to the body - keeping you warmer for longer. Ortles TirolWool Celliant Insulated Jacket