Thrive Mattress Platform Foundation Bed Base of 3 Height Adjustments - California King ADJUSTABLE HEIGHT - If you prefer to fall into bed or if you like to climb into bed, this mattress platform can be height adjusted to your desired preference. The available heights that you can adjust to are 12-inch, 14-inch, or 16-inch. MORE SPACE TO STORE - Cut out the hassle of looking for a place to put random stuff. Designed for easy and convenient storage, this platform foundation lets you save space by giving enough clearance (11-inch, 13-inch or 15-inch) underneath to put your storage tote, container, shoes, clothes, or just about anything that fits the space! EASY TO ASSEMBLE OR FOLD TO PUT AWAY - Set up in minutes or fold to transport or put away. All necessary tools are included and no extra tools are needed. A simple and easy to read manual is included for your convenience. QUIET & STURDY TO THE CORE: - If your current boxspring or foundation is making your mattress sag or is loud when you get on and off - toss it out. This heavy duty bed frame is made out of extra durable metal and does not squeak - so you can sleep with your partner peacefully. Fully compatible with all Thrive mattresses and any other mattress including springs, memory foam or latex. SATISFACTION GUARANTEED - If you dont love your foundation or if it doesnt work for your needs just contact us and well make it right. Comes with a 10-Year factory warranty for your peace of mind.