"The fabric of our lives" is a tagline used by the clothing brand, Cotton Incorporated, to highlight the importance of cotton in our lives. Cotton is a natural, sustainable fiber that is used in a wide range of clothing items, including shirts, jeans, dresses, and more. The campaign aims to promote the benefits of cotton, including its comfort, breathability, and versatility. So, according to Cotton Incorporated, "the fabric of our lives" is cotton!