This zip in lining for extra insulation. Sizes 34" - 52". The Tartan matches the lining of the following outer jackets:**Olive (Classic Tartan) liner fits Classic Beaufort (Olive), Classic Moorland (Olive and Sandstone), Classic Northumbria, Classic Bedale (Olive), Classic Durham**Navy liner fits Beaufort (Navy), Border (Navy), Bedale (Navy)**Rustic liner fits Beaufort (Rustic) and Bedale (Rustic) jackets**Olive (Ancient Tartan) liner fits Beaufort (Sage), Border (Sage), Bedale (Sage)**Black liner fitsBeaufort (Black), Bedale (Black)