Free Shipping We've taken the inconvenience out of bed shopping by creating a base that comes flattened in a manageably sized box. Plus, we'll ship it free to your home. Replaces Box Spring Cariloha's solid surface Foundation Base provides better support for your mattress, maintaining posture during sleep. Fits Perfectly Provides the ideal fit for the Cariloha Mattress. It also fits in most existing bed frames, so you can keep your bedroom looking picture perfect. Upgrade Your Bed Support The Cariloha Foundation Base upgrades your overall bed support system, replacing outdated box springs, slats or anything else you may have been using. Plus, it fits easily into any pre-existing bed frame and, with three adjustable leg heights, it's tall enough to store items underneath. It's quick to set up, affordable, and attractive. Durable & Comfortable Support your soft, sustainable sleeping habits with Cariloha's durable, comfortable Foundation Bed