 The mantle is a vestment or robe worn by members since the 15th century. Once made of wool, by the 16th century it was made of velvet. The mantle was originally purple, but varied during the 17th and 18th centuries between celestial blue, pale blue, royal blue, dark blue, violet, and ultramarine. Mantles are now dark blue and lined with white taffeta. The mantles of the Sovereign, the Prince of Wales, and Royal Knights and Ladies end in trains. The heraldic shield of St. George's Cross encircled by the Garter is sewn onto the left shoulder of the mantle, but the Sovereign's mantle instead has the star of the Order. Attached to the mantle over the right shoulder are a dark red velvet hood and surcoat, which have lost all function over time and appear to the modern observer simply as a splash of colour.
