Womens 3in1 Jackets are perfect if you’re buying for the colder days out walking or going to work. 3in1 Waterproof Jackets will have a zip in jacket normally either a fleece or a synthetic insulated jacket. You can then take the inner jacket out to wear on its own, Wear the Waterproof jacket on its own, Or Both Together. So this is a great way to get all you need in a Waterproof Jacket. For a better description on Waterproof Fabrics have a look at our Womens Waterproof Jacket Section.