What is a softshell jacket? Quite simply it combines the benefit of a waterproof shell with the extra warmth of a fleece or mid layer. With high water and wind resistance (some are fully windproof) plus some insulation they are ideal for a high percentage of time in the outdoors, more comfortable than a waterproof jacket on it's own, more protection than a standard fleece. Softshell jackets vary in their fabric use, some are heavier with more insulation for colder seasons, others have greater breathable properties but less protection. Check the individual product info for more details.