What is the Saatva box foundation warranty? December 23, 2022 22:08 Updated The Saatva box foundation comes with our Saatva Friends for Life warranty. Please visit our full warranty page for details. Related articles What height foundation should I choose? What is the Saatva box foundation? Will my Saatva mattress work with my existing box spring or foundation? What is the Saatva metal bed frame warranty? What are the dimensions of the Saatva foundation?