Mattress Foundations

About

Mattress foundations are the quiet workhorses of a healthy sleep system, giving your mattress firm, even support while helping air circulate beneath you. Our designs use sustainable coconut coir and other natural materials instead of metal grids or synthetic boards, creating a solid, breathable base that keeps your bed feeling stable, comfortable, and better protected over time. Whether you need to replace a box spring or add rigidity to a platform frame, these foundations ensure your mattress performs exactly as it was designed to. A coir foundation adds structure and lift under a wide range of sleep surfaces, from dense cotton-and-wool builds to more cushioned natural mattresses and upgraded organic mattress designs . The firm, fibrous core distributes weight across the full surface of the bed, helping reduce sagging and improving alignment, while its open structure allows moisture to dissipate instead of lingering underneath the mattress. For platform setups, our mattress foundations and inserts are an easy way to fine-tune support without changing the frame you love. They sit neatly inside or on top of solid wood platform beds , turning simple slat systems into a more continuous surface—especially helpful under thinner futon-style mattresses or latex cores that benefit from consistent contact and airflow. If you’re drawn to low, grounded sleeping, these foundations also complement Japanese-inspired layouts and layered sleep systems. They can be used alongside firm bases like tatami platforms and mats or combined with breathable underlayers in natural bed rug collections to keep floor-friendly beds drier and better ventilated, particularly in humid climates or on solid floors.