Coat Welter Shelter BB Overcoat Techwool Navy This oversized but elegant overcoat is a cross between your favorite wool fashion coat and your favorite technical outdoor clothes. The coat will keep you warm and dry. The external hull in technical wool has been covered with a membrane and has an anti-drop coating outside. This technical wool is a mixture of navy blue threads and military threads woven in a super fabric that looks like a subtle leopard print. Doubled with a membrane and covered with a DWR which makes the fabric both waterproof and water repellent.