'Mirror wills' are sometimes made by couples who want identical or very similar wishes in their wills. There is nothing technical or different about the wills themselves, just that the wills are a reflection of each other i.e. a husband leaves everything to his wife, and the wife leaves everything to her husband. We don't specifically provide a mirror will package, but couples are free to reflect each other's wishes in their separate wills if they like.
The result is exactly the same legally and gives each partner more flexibility to leave personal gifts and messages to friends and family.